Hippeastrum Holland 'Picotee Petticoat'
Amaryllis - Pre-Order for Fall 2024
Hippeastrum Holland 'Picotee Petticoat'
Amaryllis - Pre-Order for Fall 2024
Hippeastrum Southern Hemisphere 'Amadeus'
Christmas Forcing Amaryllis - Pre-Order for Fall 2024
Zantedeschia Aethiopica 'Aethiopica'
Calla Aethiopica - Pre-Order for Fall 2024
We carry 40 plants that match your search request. We've included all matches below. Click on any plant to learn additional details.
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Storage After Arrival Until Planting Time
Upon arrival, inspect the roots for any possible damage. Store the roots in the closed shipping container at 45-50° F up to 2-3 weeks.
Forcing Dahlia for Pot
Greenhouse Culture
The greenhouse requirements and general growth pattern of the Dahlia are quite similar to those of the Easter Lily. Dahlias begin to shoot
growth slowly and unevenly and will range from 1-2-3 or more shoots. DO NOT PERMIT MORE THAN 3 SHOOTS TO DEVELOP FROM THE CROWN.
Watering
After planting, water the medium thoroughly. Subsequently, for the initial 4-5 weeks keep the medium moist but not wet. After the shoots begin to
develop water should be applied directly to the medium. Avoid wetting the foliage whenever possible.Once the flowerbuds become visible, watering will
have to be more frequently and thoroughly. This is due to increased water requirements of the plant. On the date that A'Rest is to be applied as a
soil drench, the medium must be moist. Water the evening before and then apply the A'Rest the next morning.
Potting, Planting Medium, Spacing
Normally Dahlia are forced single in a 6" (15 cm) pot, either 3/4 or standard size pots can be used. Also either clay or plastic pots can be used but
plastic pots are preferred. Dahlia require a well drained, granulated medium. It should be sterile, have a pH of 6-7 and be low in soluble salts.
Because the application of A'Rest must be as a soil drench, the texture of the medium is critical. It should consist of equal parts of loamy soil,
a coarse aggregate, and peat. The organic matter should not be over 1/3 of mixture and the medium should not contain bark.
Light, Temperature & Ventilation in Greenhouse
Dahlia must be exposed to full sunlight throughout the greenhouse growing period. Dahlia should be forced at a minimum night temperature of 62-65° F.
Lower temperature will delay flowering. Day temperatures should be kept at 68-72° F. Higher temperatures if given for a prolonged period of time can
reduce the plant quality. To delay the development of the crop near the date of marketing, it is possible to lower the night temperature to 55° F,
conversely, the crop can be accelerated by forcing 70-75° F for a few days. Good ventilation is essential. Do not permit humidity to build up.
Fertilizer
Dahlia require continuous fertilization beginning immediately after shoot growth becomes visible. A complete (NPK) fertilizer is required. A slow release
(14-14-14) fertilizer applied as a top-dress can be used. Also a weekly application of 200 ppmN of a 20-20-20 soluble fertilizer
The liquid feed can be used as a supplement to the slow release fertilization if needed. can be used.
Use of Ancymidol (A'Rest)
The only plant growth regulator approved for use in controlling the tuberous-rooted dahlia is ancymidol (A'Rest). For primary height control the
ancymidol must be applied as a soil drench no later than two weeks after planting. More precisely, it should be applied when the shoots are
approximately 1/4" (0.5 cm) long. At the time of application the planting medium must be moist! See variety list for use of A'Rest.
Pinching
Each variety will produce a range of single, double or multiple shooted roots to develop the maximum flowers per pot at the time of marketing,
and to provide better shaped plants, it is necessary that all plants which are producing only a single strong shoots must be pinched. It appears that
the best stage of development to pinch out the terminal shoot is after the 3rd or 4th pair of leaves have unfolded. Dahlia normally form 2-4
pair of leaves. A pinch at this time will force 2-4 lateral breaks to produce more flowers.
Cultivated Stock
All roots must be from cultivated stock, especially grown for pot culture. Do not use regular, uncultivated stock.
For Cut
Planting, Medium, Watering & Fertilizer
Use a well drained soil pH 6-7 and a low soluble salt. Plant in full sun. Plant the crown slightly above the soil. Do not split roots prior to planting. Place
dahlias in rows 2 feet on center, while the rows should be 2-3 feet apart. Dahlias are a water loving plant. In dry conditions be sure to add water to
allow for proper growth. Continuous feeding is required, beginning at shoot emergence. Use a weekly application of 200 ppmN of a 20-20-20 or a topdress
application of a slow release 14-14-14 fertilizer. Cut when petals begin to loosen. Dahlias can be cut with or without foliage. Keep in cooler at 40-45° F.
Storage After Arrival Until Planting Time
Upon arrival, inspect the roots for any possible damage. Store the roots in the closed shipping container at 45-50° F up to 2-3 weeks.
Forcing Dahlia for Pot
Greenhouse Culture
The greenhouse requirements and general growth pattern of the Dahlia are quite similar to those of the Easter Lily. Dahlias begin to shoot
growth slowly and unevenly and will range from 1-2-3 or more shoots. DO NOT PERMIT MORE THAN 3 SHOOTS TO DEVELOP FROM THE CROWN.
Watering
After planting, water the medium thoroughly. Subsequently, for the initial 4-5 weeks keep the medium moist but not wet. After the shoots begin to
develop water should be applied directly to the medium. Avoid wetting the foliage whenever possible.Once the flowerbuds become visible, watering will
have to be more frequently and thoroughly. This is due to increased water requirements of the plant. On the date that A'Rest is to be applied as a
soil drench, the medium must be moist. Water the evening before and then apply the A'Rest the next morning.
Potting, Planting Medium, Spacing
Normally Dahlia are forced single in a 6" (15 cm) pot, either 3/4 or standard size pots can be used. Also either clay or plastic pots can be used but
plastic pots are preferred. Dahlia require a well drained, granulated medium. It should be sterile, have a pH of 6-7 and be low in soluble salts.
Because the application of A'Rest must be as a soil drench, the texture of the medium is critical. It should consist of equal parts of loamy soil,
a coarse aggregate, and peat. The organic matter should not be over 1/3 of mixture and the medium should not contain bark.
Light, Temperature & Ventilation in Greenhouse
Dahlia must be exposed to full sunlight throughout the greenhouse growing period. Dahlia should be forced at a minimum night temperature of 62-65° F.
Lower temperature will delay flowering. Day temperatures should be kept at 68-72° F. Higher temperatures if given for a prolonged period of time can
reduce the plant quality. To delay the development of the crop near the date of marketing, it is possible to lower the night temperature to 55° F,
conversely, the crop can be accelerated by forcing 70-75° F for a few days. Good ventilation is essential. Do not permit humidity to build up.
Fertilizer
Dahlia require continuous fertilization beginning immediately after shoot growth becomes visible. A complete (NPK) fertilizer is required. A slow release
(14-14-14) fertilizer applied as a top-dress can be used. Also a weekly application of 200 ppmN of a 20-20-20 soluble fertilizer
The liquid feed can be used as a supplement to the slow release fertilization if needed. can be used.
Use of Ancymidol (A'Rest)
The only plant growth regulator approved for use in controlling the tuberous-rooted dahlia is ancymidol (A'Rest). For primary height control the
ancymidol must be applied as a soil drench no later than two weeks after planting. More precisely, it should be applied when the shoots are
approximately 1/4" (0.5 cm) long. At the time of application the planting medium must be moist! See variety list for use of A'Rest.
Pinching
Each variety will produce a range of single, double or multiple shooted roots to develop the maximum flowers per pot at the time of marketing,
and to provide better shaped plants, it is necessary that all plants which are producing only a single strong shoots must be pinched. It appears that
the best stage of development to pinch out the terminal shoot is after the 3rd or 4th pair of leaves have unfolded. Dahlia normally form 2-4
pair of leaves. A pinch at this time will force 2-4 lateral breaks to produce more flowers.
Cultivated Stock
All roots must be from cultivated stock, especially grown for pot culture. Do not use regular, uncultivated stock.
For Cut
Planting, Medium, Watering & Fertilizer
Use a well drained soil pH 6-7 and a low soluble salt. Plant in full sun. Plant the crown slightly above the soil. Do not split roots prior to planting. Place
dahlias in rows 2 feet on center, while the rows should be 2-3 feet apart. Dahlias are a water loving plant. In dry conditions be sure to add water to
allow for proper growth. Continuous feeding is required, beginning at shoot emergence. Use a weekly application of 200 ppmN of a 20-20-20 or a topdress
application of a slow release 14-14-14 fertilizer. Cut when petals begin to loosen. Dahlias can be cut with or without foliage. Keep in cooler at 40-45° F.
Storage After Arrival Until Planting Time
Upon arrival, inspect the roots for any possible damage. Store the roots in the closed shipping container at 45-50° F up to 2-3 weeks.
Forcing Dahlia for Pot
Greenhouse Culture
The greenhouse requirements and general growth pattern of the Dahlia are quite similar to those of the Easter Lily. Dahlias begin to shoot
growth slowly and unevenly and will range from 1-2-3 or more shoots. DO NOT PERMIT MORE THAN 3 SHOOTS TO DEVELOP FROM THE CROWN.
Watering
After planting, water the medium thoroughly. Subsequently, for the initial 4-5 weeks keep the medium moist but not wet. After the shoots begin to
develop water should be applied directly to the medium. Avoid wetting the foliage whenever possible.Once the flowerbuds become visible, watering will
have to be more frequently and thoroughly. This is due to increased water requirements of the plant. On the date that A'Rest is to be applied as a
soil drench, the medium must be moist. Water the evening before and then apply the A'Rest the next morning.
Potting, Planting Medium, Spacing
Normally Dahlia are forced single in a 6" (15 cm) pot, either 3/4 or standard size pots can be used. Also either clay or plastic pots can be used but
plastic pots are preferred. Dahlia require a well drained, granulated medium. It should be sterile, have a pH of 6-7 and be low in soluble salts.
Because the application of A'Rest must be as a soil drench, the texture of the medium is critical. It should consist of equal parts of loamy soil,
a coarse aggregate, and peat. The organic matter should not be over 1/3 of mixture and the medium should not contain bark.
Light, Temperature & Ventilation in Greenhouse
Dahlia must be exposed to full sunlight throughout the greenhouse growing period. Dahlia should be forced at a minimum night temperature of 62-65° F.
Lower temperature will delay flowering. Day temperatures should be kept at 68-72° F. Higher temperatures if given for a prolonged period of time can
reduce the plant quality. To delay the development of the crop near the date of marketing, it is possible to lower the night temperature to 55° F,
conversely, the crop can be accelerated by forcing 70-75° F for a few days. Good ventilation is essential. Do not permit humidity to build up.
Fertilizer
Dahlia require continuous fertilization beginning immediately after shoot growth becomes visible. A complete (NPK) fertilizer is required. A slow release
(14-14-14) fertilizer applied as a top-dress can be used. Also a weekly application of 200 ppmN of a 20-20-20 soluble fertilizer
The liquid feed can be used as a supplement to the slow release fertilization if needed. can be used.
Use of Ancymidol (A'Rest)
The only plant growth regulator approved for use in controlling the tuberous-rooted dahlia is ancymidol (A'Rest). For primary height control the
ancymidol must be applied as a soil drench no later than two weeks after planting. More precisely, it should be applied when the shoots are
approximately 1/4" (0.5 cm) long. At the time of application the planting medium must be moist! See variety list for use of A'Rest.
Pinching
Each variety will produce a range of single, double or multiple shooted roots to develop the maximum flowers per pot at the time of marketing,
and to provide better shaped plants, it is necessary that all plants which are producing only a single strong shoots must be pinched. It appears that
the best stage of development to pinch out the terminal shoot is after the 3rd or 4th pair of leaves have unfolded. Dahlia normally form 2-4
pair of leaves. A pinch at this time will force 2-4 lateral breaks to produce more flowers.
Cultivated Stock
All roots must be from cultivated stock, especially grown for pot culture. Do not use regular, uncultivated stock.
For Cut
Planting, Medium, Watering & Fertilizer
Use a well drained soil pH 6-7 and a low soluble salt. Plant in full sun. Plant the crown slightly above the soil. Do not split roots prior to planting. Place
dahlias in rows 2 feet on center, while the rows should be 2-3 feet apart. Dahlias are a water loving plant. In dry conditions be sure to add water to
allow for proper growth. Continuous feeding is required, beginning at shoot emergence. Use a weekly application of 200 ppmN of a 20-20-20 or a topdress
application of a slow release 14-14-14 fertilizer. Cut when petals begin to loosen. Dahlias can be cut with or without foliage. Keep in cooler at 40-45° F.
Storage After Arrival Until Planting Time
Upon arrival, inspect the roots for any possible damage. Store the roots in the closed shipping container at 45-50° F up to 2-3 weeks.
Forcing Dahlia for Pot
Greenhouse Culture
The greenhouse requirements and general growth pattern of the Dahlia are quite similar to those of the Easter Lily. Dahlias begin to shoot
growth slowly and unevenly and will range from 1-2-3 or more shoots. DO NOT PERMIT MORE THAN 3 SHOOTS TO DEVELOP FROM THE CROWN.
Watering
After planting, water the medium thoroughly. Subsequently, for the initial 4-5 weeks keep the medium moist but not wet. After the shoots begin to
develop water should be applied directly to the medium. Avoid wetting the foliage whenever possible.Once the flowerbuds become visible, watering will
have to be more frequently and thoroughly. This is due to increased water requirements of the plant. On the date that A'Rest is to be applied as a
soil drench, the medium must be moist. Water the evening before and then apply the A'Rest the next morning.
Potting, Planting Medium, Spacing
Normally Dahlia are forced single in a 6" (15 cm) pot, either 3/4 or standard size pots can be used. Also either clay or plastic pots can be used but
plastic pots are preferred. Dahlia require a well drained, granulated medium. It should be sterile, have a pH of 6-7 and be low in soluble salts.
Because the application of A'Rest must be as a soil drench, the texture of the medium is critical. It should consist of equal parts of loamy soil,
a coarse aggregate, and peat. The organic matter should not be over 1/3 of mixture and the medium should not contain bark.
Light, Temperature & Ventilation in Greenhouse
Dahlia must be exposed to full sunlight throughout the greenhouse growing period. Dahlia should be forced at a minimum night temperature of 62-65° F.
Lower temperature will delay flowering. Day temperatures should be kept at 68-72° F. Higher temperatures if given for a prolonged period of time can
reduce the plant quality. To delay the development of the crop near the date of marketing, it is possible to lower the night temperature to 55° F,
conversely, the crop can be accelerated by forcing 70-75° F for a few days. Good ventilation is essential. Do not permit humidity to build up.
Fertilizer
Dahlia require continuous fertilization beginning immediately after shoot growth becomes visible. A complete (NPK) fertilizer is required. A slow release
(14-14-14) fertilizer applied as a top-dress can be used. Also a weekly application of 200 ppmN of a 20-20-20 soluble fertilizer
The liquid feed can be used as a supplement to the slow release fertilization if needed. can be used.
Use of Ancymidol (A'Rest)
The only plant growth regulator approved for use in controlling the tuberous-rooted dahlia is ancymidol (A'Rest). For primary height control the
ancymidol must be applied as a soil drench no later than two weeks after planting. More precisely, it should be applied when the shoots are
approximately 1/4" (0.5 cm) long. At the time of application the planting medium must be moist! See variety list for use of A'Rest.
Pinching
Each variety will produce a range of single, double or multiple shooted roots to develop the maximum flowers per pot at the time of marketing,
and to provide better shaped plants, it is necessary that all plants which are producing only a single strong shoots must be pinched. It appears that
the best stage of development to pinch out the terminal shoot is after the 3rd or 4th pair of leaves have unfolded. Dahlia normally form 2-4
pair of leaves. A pinch at this time will force 2-4 lateral breaks to produce more flowers.
Cultivated Stock
All roots must be from cultivated stock, especially grown for pot culture. Do not use regular, uncultivated stock.
For Cut
Planting, Medium, Watering & Fertilizer
Use a well drained soil pH 6-7 and a low soluble salt. Plant in full sun. Plant the crown slightly above the soil. Do not split roots prior to planting. Place
dahlias in rows 2 feet on center, while the rows should be 2-3 feet apart. Dahlias are a water loving plant. In dry conditions be sure to add water to
allow for proper growth. Continuous feeding is required, beginning at shoot emergence. Use a weekly application of 200 ppmN of a 20-20-20 or a topdress
application of a slow release 14-14-14 fertilizer. Cut when petals begin to loosen. Dahlias can be cut with or without foliage. Keep in cooler at 40-45° F.
Storage After Arrival Until Planting Time
Upon arrival, inspect the roots for any possible damage. Store the roots in the closed shipping container at 45-50° F up to 2-3 weeks.
Forcing Dahlia for Pot
Greenhouse Culture
The greenhouse requirements and general growth pattern of the Dahlia are quite similar to those of the Easter Lily. Dahlias begin to shoot
growth slowly and unevenly and will range from 1-2-3 or more shoots. DO NOT PERMIT MORE THAN 3 SHOOTS TO DEVELOP FROM THE CROWN.
Watering
After planting, water the medium thoroughly. Subsequently, for the initial 4-5 weeks keep the medium moist but not wet. After the shoots begin to
develop water should be applied directly to the medium. Avoid wetting the foliage whenever possible.Once the flowerbuds become visible, watering will
have to be more frequently and thoroughly. This is due to increased water requirements of the plant. On the date that A'Rest is to be applied as a
soil drench, the medium must be moist. Water the evening before and then apply the A'Rest the next morning.
Potting, Planting Medium, Spacing
Normally Dahlia are forced single in a 6" (15 cm) pot, either 3/4 or standard size pots can be used. Also either clay or plastic pots can be used but
plastic pots are preferred. Dahlia require a well drained, granulated medium. It should be sterile, have a pH of 6-7 and be low in soluble salts.
Because the application of A'Rest must be as a soil drench, the texture of the medium is critical. It should consist of equal parts of loamy soil,
a coarse aggregate, and peat. The organic matter should not be over 1/3 of mixture and the medium should not contain bark.
Light, Temperature & Ventilation in Greenhouse
Dahlia must be exposed to full sunlight throughout the greenhouse growing period. Dahlia should be forced at a minimum night temperature of 62-65° F.
Lower temperature will delay flowering. Day temperatures should be kept at 68-72° F. Higher temperatures if given for a prolonged period of time can
reduce the plant quality. To delay the development of the crop near the date of marketing, it is possible to lower the night temperature to 55° F,
conversely, the crop can be accelerated by forcing 70-75° F for a few days. Good ventilation is essential. Do not permit humidity to build up.
Fertilizer
Dahlia require continuous fertilization beginning immediately after shoot growth becomes visible. A complete (NPK) fertilizer is required. A slow release
(14-14-14) fertilizer applied as a top-dress can be used. Also a weekly application of 200 ppmN of a 20-20-20 soluble fertilizer
The liquid feed can be used as a supplement to the slow release fertilization if needed. can be used.
Use of Ancymidol (A'Rest)
The only plant growth regulator approved for use in controlling the tuberous-rooted dahlia is ancymidol (A'Rest). For primary height control the
ancymidol must be applied as a soil drench no later than two weeks after planting. More precisely, it should be applied when the shoots are
approximately 1/4" (0.5 cm) long. At the time of application the planting medium must be moist! See variety list for use of A'Rest.
Pinching
Each variety will produce a range of single, double or multiple shooted roots to develop the maximum flowers per pot at the time of marketing,
and to provide better shaped plants, it is necessary that all plants which are producing only a single strong shoots must be pinched. It appears that
the best stage of development to pinch out the terminal shoot is after the 3rd or 4th pair of leaves have unfolded. Dahlia normally form 2-4
pair of leaves. A pinch at this time will force 2-4 lateral breaks to produce more flowers.
Cultivated Stock
All roots must be from cultivated stock, especially grown for pot culture. Do not use regular, uncultivated stock.
For Cut
Planting, Medium, Watering & Fertilizer
Use a well drained soil pH 6-7 and a low soluble salt. Plant in full sun. Plant the crown slightly above the soil. Do not split roots prior to planting. Place
dahlias in rows 2 feet on center, while the rows should be 2-3 feet apart. Dahlias are a water loving plant. In dry conditions be sure to add water to
allow for proper growth. Continuous feeding is required, beginning at shoot emergence. Use a weekly application of 200 ppmN of a 20-20-20 or a topdress
application of a slow release 14-14-14 fertilizer. Cut when petals begin to loosen. Dahlias can be cut with or without foliage. Keep in cooler at 40-45° F.
Storage After Arrival Until Planting Time
Upon arrival, inspect the roots for any possible damage. Store the roots in the closed shipping container at 45-50° F up to 2-3 weeks.
Forcing Dahlia for Pot
Greenhouse Culture
The greenhouse requirements and general growth pattern of the Dahlia are quite similar to those of the Easter Lily. Dahlias begin to shoot
growth slowly and unevenly and will range from 1-2-3 or more shoots. DO NOT PERMIT MORE THAN 3 SHOOTS TO DEVELOP FROM THE CROWN.
Watering
After planting, water the medium thoroughly. Subsequently, for the initial 4-5 weeks keep the medium moist but not wet. After the shoots begin to
develop water should be applied directly to the medium. Avoid wetting the foliage whenever possible.Once the flowerbuds become visible, watering will
have to be more frequently and thoroughly. This is due to increased water requirements of the plant. On the date that A'Rest is to be applied as a
soil drench, the medium must be moist. Water the evening before and then apply the A'Rest the next morning.
Potting, Planting Medium, Spacing
Normally Dahlia are forced single in a 6" (15 cm) pot, either 3/4 or standard size pots can be used. Also either clay or plastic pots can be used but
plastic pots are preferred. Dahlia require a well drained, granulated medium. It should be sterile, have a pH of 6-7 and be low in soluble salts.
Because the application of A'Rest must be as a soil drench, the texture of the medium is critical. It should consist of equal parts of loamy soil,
a coarse aggregate, and peat. The organic matter should not be over 1/3 of mixture and the medium should not contain bark.
Light, Temperature & Ventilation in Greenhouse
Dahlia must be exposed to full sunlight throughout the greenhouse growing period. Dahlia should be forced at a minimum night temperature of 62-65° F.
Lower temperature will delay flowering. Day temperatures should be kept at 68-72° F. Higher temperatures if given for a prolonged period of time can
reduce the plant quality. To delay the development of the crop near the date of marketing, it is possible to lower the night temperature to 55° F,
conversely, the crop can be accelerated by forcing 70-75° F for a few days. Good ventilation is essential. Do not permit humidity to build up.
Fertilizer
Dahlia require continuous fertilization beginning immediately after shoot growth becomes visible. A complete (NPK) fertilizer is required. A slow release
(14-14-14) fertilizer applied as a top-dress can be used. Also a weekly application of 200 ppmN of a 20-20-20 soluble fertilizer
The liquid feed can be used as a supplement to the slow release fertilization if needed. can be used.
Use of Ancymidol (A'Rest)
The only plant growth regulator approved for use in controlling the tuberous-rooted dahlia is ancymidol (A'Rest). For primary height control the
ancymidol must be applied as a soil drench no later than two weeks after planting. More precisely, it should be applied when the shoots are
approximately 1/4" (0.5 cm) long. At the time of application the planting medium must be moist! See variety list for use of A'Rest.
Pinching
Each variety will produce a range of single, double or multiple shooted roots to develop the maximum flowers per pot at the time of marketing,
and to provide better shaped plants, it is necessary that all plants which are producing only a single strong shoots must be pinched. It appears that
the best stage of development to pinch out the terminal shoot is after the 3rd or 4th pair of leaves have unfolded. Dahlia normally form 2-4
pair of leaves. A pinch at this time will force 2-4 lateral breaks to produce more flowers.
Cultivated Stock
All roots must be from cultivated stock, especially grown for pot culture. Do not use regular, uncultivated stock.
For Cut
Planting, Medium, Watering & Fertilizer
Use a well drained soil pH 6-7 and a low soluble salt. Plant in full sun. Plant the crown slightly above the soil. Do not split roots prior to planting. Place
dahlias in rows 2 feet on center, while the rows should be 2-3 feet apart. Dahlias are a water loving plant. In dry conditions be sure to add water to
allow for proper growth. Continuous feeding is required, beginning at shoot emergence. Use a weekly application of 200 ppmN of a 20-20-20 or a topdress
application of a slow release 14-14-14 fertilizer. Cut when petals begin to loosen. Dahlias can be cut with or without foliage. Keep in cooler at 40-45° F.
Storage After Arrival Until Planting Time
Upon arrival, inspect the roots for any possible damage. Store the roots in the closed shipping container at 45-50° F up to 2-3 weeks.
Forcing Dahlia for Pot
Greenhouse Culture
The greenhouse requirements and general growth pattern of the Dahlia are quite similar to those of the Easter Lily. Dahlias begin to shoot
growth slowly and unevenly and will range from 1-2-3 or more shoots. DO NOT PERMIT MORE THAN 3 SHOOTS TO DEVELOP FROM THE CROWN.
Watering
After planting, water the medium thoroughly. Subsequently, for the initial 4-5 weeks keep the medium moist but not wet. After the shoots begin to
develop water should be applied directly to the medium. Avoid wetting the foliage whenever possible.Once the flowerbuds become visible, watering will
have to be more frequently and thoroughly. This is due to increased water requirements of the plant. On the date that A'Rest is to be applied as a
soil drench, the medium must be moist. Water the evening before and then apply the A'Rest the next morning.
Potting, Planting Medium, Spacing
Normally Dahlia are forced single in a 6" (15 cm) pot, either 3/4 or standard size pots can be used. Also either clay or plastic pots can be used but
plastic pots are preferred. Dahlia require a well drained, granulated medium. It should be sterile, have a pH of 6-7 and be low in soluble salts.
Because the application of A'Rest must be as a soil drench, the texture of the medium is critical. It should consist of equal parts of loamy soil,
a coarse aggregate, and peat. The organic matter should not be over 1/3 of mixture and the medium should not contain bark.
Light, Temperature & Ventilation in Greenhouse
Dahlia must be exposed to full sunlight throughout the greenhouse growing period. Dahlia should be forced at a minimum night temperature of 62-65° F.
Lower temperature will delay flowering. Day temperatures should be kept at 68-72° F. Higher temperatures if given for a prolonged period of time can
reduce the plant quality. To delay the development of the crop near the date of marketing, it is possible to lower the night temperature to 55° F,
conversely, the crop can be accelerated by forcing 70-75° F for a few days. Good ventilation is essential. Do not permit humidity to build up.
Fertilizer
Dahlia require continuous fertilization beginning immediately after shoot growth becomes visible. A complete (NPK) fertilizer is required. A slow release
(14-14-14) fertilizer applied as a top-dress can be used. Also a weekly application of 200 ppmN of a 20-20-20 soluble fertilizer
The liquid feed can be used as a supplement to the slow release fertilization if needed. can be used.
Use of Ancymidol (A'Rest)
The only plant growth regulator approved for use in controlling the tuberous-rooted dahlia is ancymidol (A'Rest). For primary height control the
ancymidol must be applied as a soil drench no later than two weeks after planting. More precisely, it should be applied when the shoots are
approximately 1/4" (0.5 cm) long. At the time of application the planting medium must be moist! See variety list for use of A'Rest.
Pinching
Each variety will produce a range of single, double or multiple shooted roots to develop the maximum flowers per pot at the time of marketing,
and to provide better shaped plants, it is necessary that all plants which are producing only a single strong shoots must be pinched. It appears that
the best stage of development to pinch out the terminal shoot is after the 3rd or 4th pair of leaves have unfolded. Dahlia normally form 2-4
pair of leaves. A pinch at this time will force 2-4 lateral breaks to produce more flowers.
Cultivated Stock
All roots must be from cultivated stock, especially grown for pot culture. Do not use regular, uncultivated stock.
For Cut
Planting, Medium, Watering & Fertilizer
Use a well drained soil pH 6-7 and a low soluble salt. Plant in full sun. Plant the crown slightly above the soil. Do not split roots prior to planting. Place
dahlias in rows 2 feet on center, while the rows should be 2-3 feet apart. Dahlias are a water loving plant. In dry conditions be sure to add water to
allow for proper growth. Continuous feeding is required, beginning at shoot emergence. Use a weekly application of 200 ppmN of a 20-20-20 or a topdress
application of a slow release 14-14-14 fertilizer. Cut when petals begin to loosen. Dahlias can be cut with or without foliage. Keep in cooler at 40-45° F.
Storage After Arrival Until Planting Time
Upon arrival, inspect the roots for any possible damage. Store the roots in the closed shipping container at 45-50° F up to 2-3 weeks.
Forcing Dahlia for Pot
Greenhouse Culture
The greenhouse requirements and general growth pattern of the Dahlia are quite similar to those of the Easter Lily. Dahlias begin to shoot
growth slowly and unevenly and will range from 1-2-3 or more shoots. DO NOT PERMIT MORE THAN 3 SHOOTS TO DEVELOP FROM THE CROWN.
Watering
After planting, water the medium thoroughly. Subsequently, for the initial 4-5 weeks keep the medium moist but not wet. After the shoots begin to
develop water should be applied directly to the medium. Avoid wetting the foliage whenever possible.Once the flowerbuds become visible, watering will
have to be more frequently and thoroughly. This is due to increased water requirements of the plant. On the date that A'Rest is to be applied as a
soil drench, the medium must be moist. Water the evening before and then apply the A'Rest the next morning.
Potting, Planting Medium, Spacing
Normally Dahlia are forced single in a 6" (15 cm) pot, either 3/4 or standard size pots can be used. Also either clay or plastic pots can be used but
plastic pots are preferred. Dahlia require a well drained, granulated medium. It should be sterile, have a pH of 6-7 and be low in soluble salts.
Because the application of A'Rest must be as a soil drench, the texture of the medium is critical. It should consist of equal parts of loamy soil,
a coarse aggregate, and peat. The organic matter should not be over 1/3 of mixture and the medium should not contain bark.
Light, Temperature & Ventilation in Greenhouse
Dahlia must be exposed to full sunlight throughout the greenhouse growing period. Dahlia should be forced at a minimum night temperature of 62-65° F.
Lower temperature will delay flowering. Day temperatures should be kept at 68-72° F. Higher temperatures if given for a prolonged period of time can
reduce the plant quality. To delay the development of the crop near the date of marketing, it is possible to lower the night temperature to 55° F,
conversely, the crop can be accelerated by forcing 70-75° F for a few days. Good ventilation is essential. Do not permit humidity to build up.
Fertilizer
Dahlia require continuous fertilization beginning immediately after shoot growth becomes visible. A complete (NPK) fertilizer is required. A slow release
(14-14-14) fertilizer applied as a top-dress can be used. Also a weekly application of 200 ppmN of a 20-20-20 soluble fertilizer
The liquid feed can be used as a supplement to the slow release fertilization if needed. can be used.
Use of Ancymidol (A'Rest)
The only plant growth regulator approved for use in controlling the tuberous-rooted dahlia is ancymidol (A'Rest). For primary height control the
ancymidol must be applied as a soil drench no later than two weeks after planting. More precisely, it should be applied when the shoots are
approximately 1/4" (0.5 cm) long. At the time of application the planting medium must be moist! See variety list for use of A'Rest.
Pinching
Each variety will produce a range of single, double or multiple shooted roots to develop the maximum flowers per pot at the time of marketing,
and to provide better shaped plants, it is necessary that all plants which are producing only a single strong shoots must be pinched. It appears that
the best stage of development to pinch out the terminal shoot is after the 3rd or 4th pair of leaves have unfolded. Dahlia normally form 2-4
pair of leaves. A pinch at this time will force 2-4 lateral breaks to produce more flowers.
Cultivated Stock
All roots must be from cultivated stock, especially grown for pot culture. Do not use regular, uncultivated stock.
For Cut
Planting, Medium, Watering & Fertilizer
Use a well drained soil pH 6-7 and a low soluble salt. Plant in full sun. Plant the crown slightly above the soil. Do not split roots prior to planting. Place
dahlias in rows 2 feet on center, while the rows should be 2-3 feet apart. Dahlias are a water loving plant. In dry conditions be sure to add water to
allow for proper growth. Continuous feeding is required, beginning at shoot emergence. Use a weekly application of 200 ppmN of a 20-20-20 or a topdress
application of a slow release 14-14-14 fertilizer. Cut when petals begin to loosen. Dahlias can be cut with or without foliage. Keep in cooler at 40-45° F.
Storage After Arrival Until Planting Time
Upon arrival, inspect the roots for any possible damage. Store the roots in the closed shipping container at 45-50° F up to 2-3 weeks.
Forcing Dahlia for Pot
Greenhouse Culture
The greenhouse requirements and general growth pattern of the Dahlia are quite similar to those of the Easter Lily. Dahlias begin to shoot
growth slowly and unevenly and will range from 1-2-3 or more shoots. DO NOT PERMIT MORE THAN 3 SHOOTS TO DEVELOP FROM THE CROWN.
Watering
After planting, water the medium thoroughly. Subsequently, for the initial 4-5 weeks keep the medium moist but not wet. After the shoots begin to
develop water should be applied directly to the medium. Avoid wetting the foliage whenever possible.Once the flowerbuds become visible, watering will
have to be more frequently and thoroughly. This is due to increased water requirements of the plant. On the date that A'Rest is to be applied as a
soil drench, the medium must be moist. Water the evening before and then apply the A'Rest the next morning.
Potting, Planting Medium, Spacing
Normally Dahlia are forced single in a 6" (15 cm) pot, either 3/4 or standard size pots can be used. Also either clay or plastic pots can be used but
plastic pots are preferred. Dahlia require a well drained, granulated medium. It should be sterile, have a pH of 6-7 and be low in soluble salts.
Because the application of A'Rest must be as a soil drench, the texture of the medium is critical. It should consist of equal parts of loamy soil,
a coarse aggregate, and peat. The organic matter should not be over 1/3 of mixture and the medium should not contain bark.
Light, Temperature & Ventilation in Greenhouse
Dahlia must be exposed to full sunlight throughout the greenhouse growing period. Dahlia should be forced at a minimum night temperature of 62-65° F.
Lower temperature will delay flowering. Day temperatures should be kept at 68-72° F. Higher temperatures if given for a prolonged period of time can
reduce the plant quality. To delay the development of the crop near the date of marketing, it is possible to lower the night temperature to 55° F,
conversely, the crop can be accelerated by forcing 70-75° F for a few days. Good ventilation is essential. Do not permit humidity to build up.
Fertilizer
Dahlia require continuous fertilization beginning immediately after shoot growth becomes visible. A complete (NPK) fertilizer is required. A slow release
(14-14-14) fertilizer applied as a top-dress can be used. Also a weekly application of 200 ppmN of a 20-20-20 soluble fertilizer
The liquid feed can be used as a supplement to the slow release fertilization if needed. can be used.
Use of Ancymidol (A'Rest)
The only plant growth regulator approved for use in controlling the tuberous-rooted dahlia is ancymidol (A'Rest). For primary height control the
ancymidol must be applied as a soil drench no later than two weeks after planting. More precisely, it should be applied when the shoots are
approximately 1/4" (0.5 cm) long. At the time of application the planting medium must be moist! See variety list for use of A'Rest.
Pinching
Each variety will produce a range of single, double or multiple shooted roots to develop the maximum flowers per pot at the time of marketing,
and to provide better shaped plants, it is necessary that all plants which are producing only a single strong shoots must be pinched. It appears that
the best stage of development to pinch out the terminal shoot is after the 3rd or 4th pair of leaves have unfolded. Dahlia normally form 2-4
pair of leaves. A pinch at this time will force 2-4 lateral breaks to produce more flowers.
Cultivated Stock
All roots must be from cultivated stock, especially grown for pot culture. Do not use regular, uncultivated stock.
For Cut
Planting, Medium, Watering & Fertilizer
Use a well drained soil pH 6-7 and a low soluble salt. Plant in full sun. Plant the crown slightly above the soil. Do not split roots prior to planting. Place
dahlias in rows 2 feet on center, while the rows should be 2-3 feet apart. Dahlias are a water loving plant. In dry conditions be sure to add water to
allow for proper growth. Continuous feeding is required, beginning at shoot emergence. Use a weekly application of 200 ppmN of a 20-20-20 or a topdress
application of a slow release 14-14-14 fertilizer. Cut when petals begin to loosen. Dahlias can be cut with or without foliage. Keep in cooler at 40-45° F.
Storage After Arrival Until Planting Time
Upon arrival, inspect the roots for any possible damage. Store the roots in the closed shipping container at 45-50° F up to 2-3 weeks.
Forcing Dahlia for Pot
Greenhouse Culture
The greenhouse requirements and general growth pattern of the Dahlia are quite similar to those of the Easter Lily. Dahlias begin to shoot
growth slowly and unevenly and will range from 1-2-3 or more shoots. DO NOT PERMIT MORE THAN 3 SHOOTS TO DEVELOP FROM THE CROWN.
Watering
After planting, water the medium thoroughly. Subsequently, for the initial 4-5 weeks keep the medium moist but not wet. After the shoots begin to
develop water should be applied directly to the medium. Avoid wetting the foliage whenever possible.Once the flowerbuds become visible, watering will
have to be more frequently and thoroughly. This is due to increased water requirements of the plant. On the date that A'Rest is to be applied as a
soil drench, the medium must be moist. Water the evening before and then apply the A'Rest the next morning.
Potting, Planting Medium, Spacing
Normally Dahlia are forced single in a 6" (15 cm) pot, either 3/4 or standard size pots can be used. Also either clay or plastic pots can be used but
plastic pots are preferred. Dahlia require a well drained, granulated medium. It should be sterile, have a pH of 6-7 and be low in soluble salts.
Because the application of A'Rest must be as a soil drench, the texture of the medium is critical. It should consist of equal parts of loamy soil,
a coarse aggregate, and peat. The organic matter should not be over 1/3 of mixture and the medium should not contain bark.
Light, Temperature & Ventilation in Greenhouse
Dahlia must be exposed to full sunlight throughout the greenhouse growing period. Dahlia should be forced at a minimum night temperature of 62-65° F.
Lower temperature will delay flowering. Day temperatures should be kept at 68-72° F. Higher temperatures if given for a prolonged period of time can
reduce the plant quality. To delay the development of the crop near the date of marketing, it is possible to lower the night temperature to 55° F,
conversely, the crop can be accelerated by forcing 70-75° F for a few days. Good ventilation is essential. Do not permit humidity to build up.
Fertilizer
Dahlia require continuous fertilization beginning immediately after shoot growth becomes visible. A complete (NPK) fertilizer is required. A slow release
(14-14-14) fertilizer applied as a top-dress can be used. Also a weekly application of 200 ppmN of a 20-20-20 soluble fertilizer
The liquid feed can be used as a supplement to the slow release fertilization if needed. can be used.
Use of Ancymidol (A'Rest)
The only plant growth regulator approved for use in controlling the tuberous-rooted dahlia is ancymidol (A'Rest). For primary height control the
ancymidol must be applied as a soil drench no later than two weeks after planting. More precisely, it should be applied when the shoots are
approximately 1/4" (0.5 cm) long. At the time of application the planting medium must be moist! See variety list for use of A'Rest.
Pinching
Each variety will produce a range of single, double or multiple shooted roots to develop the maximum flowers per pot at the time of marketing,
and to provide better shaped plants, it is necessary that all plants which are producing only a single strong shoots must be pinched. It appears that
the best stage of development to pinch out the terminal shoot is after the 3rd or 4th pair of leaves have unfolded. Dahlia normally form 2-4
pair of leaves. A pinch at this time will force 2-4 lateral breaks to produce more flowers.
Cultivated Stock
All roots must be from cultivated stock, especially grown for pot culture. Do not use regular, uncultivated stock.
For Cut
Planting, Medium, Watering & Fertilizer
Use a well drained soil pH 6-7 and a low soluble salt. Plant in full sun. Plant the crown slightly above the soil. Do not split roots prior to planting. Place
dahlias in rows 2 feet on center, while the rows should be 2-3 feet apart. Dahlias are a water loving plant. In dry conditions be sure to add water to
allow for proper growth. Continuous feeding is required, beginning at shoot emergence. Use a weekly application of 200 ppmN of a 20-20-20 or a topdress
application of a slow release 14-14-14 fertilizer. Cut when petals begin to loosen. Dahlias can be cut with or without foliage. Keep in cooler at 40-45° F.
Storage After Arrival Until Planting Time
Upon arrival, inspect the roots for any possible damage. Store the roots in the closed shipping container at 45-50° F up to 2-3 weeks.
Forcing Dahlia for Pot
Greenhouse Culture
The greenhouse requirements and general growth pattern of the Dahlia are quite similar to those of the Easter Lily. Dahlias begin to shoot
growth slowly and unevenly and will range from 1-2-3 or more shoots. DO NOT PERMIT MORE THAN 3 SHOOTS TO DEVELOP FROM THE CROWN.
Watering
After planting, water the medium thoroughly. Subsequently, for the initial 4-5 weeks keep the medium moist but not wet. After the shoots begin to
develop water should be applied directly to the medium. Avoid wetting the foliage whenever possible.Once the flowerbuds become visible, watering will
have to be more frequently and thoroughly. This is due to increased water requirements of the plant. On the date that A'Rest is to be applied as a
soil drench, the medium must be moist. Water the evening before and then apply the A'Rest the next morning.
Potting, Planting Medium, Spacing
Normally Dahlia are forced single in a 6" (15 cm) pot, either 3/4 or standard size pots can be used. Also either clay or plastic pots can be used but
plastic pots are preferred. Dahlia require a well drained, granulated medium. It should be sterile, have a pH of 6-7 and be low in soluble salts.
Because the application of A'Rest must be as a soil drench, the texture of the medium is critical. It should consist of equal parts of loamy soil,
a coarse aggregate, and peat. The organic matter should not be over 1/3 of mixture and the medium should not contain bark.
Light, Temperature & Ventilation in Greenhouse
Dahlia must be exposed to full sunlight throughout the greenhouse growing period. Dahlia should be forced at a minimum night temperature of 62-65° F.
Lower temperature will delay flowering. Day temperatures should be kept at 68-72° F. Higher temperatures if given for a prolonged period of time can
reduce the plant quality. To delay the development of the crop near the date of marketing, it is possible to lower the night temperature to 55° F,
conversely, the crop can be accelerated by forcing 70-75° F for a few days. Good ventilation is essential. Do not permit humidity to build up.
Fertilizer
Dahlia require continuous fertilization beginning immediately after shoot growth becomes visible. A complete (NPK) fertilizer is required. A slow release
(14-14-14) fertilizer applied as a top-dress can be used. Also a weekly application of 200 ppmN of a 20-20-20 soluble fertilizer
The liquid feed can be used as a supplement to the slow release fertilization if needed. can be used.
Use of Ancymidol (A'Rest)
The only plant growth regulator approved for use in controlling the tuberous-rooted dahlia is ancymidol (A'Rest). For primary height control the
ancymidol must be applied as a soil drench no later than two weeks after planting. More precisely, it should be applied when the shoots are
approximately 1/4" (0.5 cm) long. At the time of application the planting medium must be moist! See variety list for use of A'Rest.
Pinching
Each variety will produce a range of single, double or multiple shooted roots to develop the maximum flowers per pot at the time of marketing,
and to provide better shaped plants, it is necessary that all plants which are producing only a single strong shoots must be pinched. It appears that
the best stage of development to pinch out the terminal shoot is after the 3rd or 4th pair of leaves have unfolded. Dahlia normally form 2-4
pair of leaves. A pinch at this time will force 2-4 lateral breaks to produce more flowers.
Cultivated Stock
All roots must be from cultivated stock, especially grown for pot culture. Do not use regular, uncultivated stock.
For Cut
Planting, Medium, Watering & Fertilizer
Use a well drained soil pH 6-7 and a low soluble salt. Plant in full sun. Plant the crown slightly above the soil. Do not split roots prior to planting. Place
dahlias in rows 2 feet on center, while the rows should be 2-3 feet apart. Dahlias are a water loving plant. In dry conditions be sure to add water to
allow for proper growth. Continuous feeding is required, beginning at shoot emergence. Use a weekly application of 200 ppmN of a 20-20-20 or a topdress
application of a slow release 14-14-14 fertilizer. Cut when petals begin to loosen. Dahlias can be cut with or without foliage. Keep in cooler at 40-45° F.
Storage After Arrival Until Planting Time
Upon arrival, inspect the roots for any possible damage. Store the roots in the closed shipping container at 45-50° F up to 2-3 weeks.
Forcing Dahlia for Pot
Greenhouse Culture
The greenhouse requirements and general growth pattern of the Dahlia are quite similar to those of the Easter Lily. Dahlias begin to shoot
growth slowly and unevenly and will range from 1-2-3 or more shoots. DO NOT PERMIT MORE THAN 3 SHOOTS TO DEVELOP FROM THE CROWN.
Watering
After planting, water the medium thoroughly. Subsequently, for the initial 4-5 weeks keep the medium moist but not wet. After the shoots begin to
develop water should be applied directly to the medium. Avoid wetting the foliage whenever possible.Once the flowerbuds become visible, watering will
have to be more frequently and thoroughly. This is due to increased water requirements of the plant. On the date that A'Rest is to be applied as a
soil drench, the medium must be moist. Water the evening before and then apply the A'Rest the next morning.
Potting, Planting Medium, Spacing
Normally Dahlia are forced single in a 6" (15 cm) pot, either 3/4 or standard size pots can be used. Also either clay or plastic pots can be used but
plastic pots are preferred. Dahlia require a well drained, granulated medium. It should be sterile, have a pH of 6-7 and be low in soluble salts.
Because the application of A'Rest must be as a soil drench, the texture of the medium is critical. It should consist of equal parts of loamy soil,
a coarse aggregate, and peat. The organic matter should not be over 1/3 of mixture and the medium should not contain bark.
Light, Temperature & Ventilation in Greenhouse
Dahlia must be exposed to full sunlight throughout the greenhouse growing period. Dahlia should be forced at a minimum night temperature of 62-65° F.
Lower temperature will delay flowering. Day temperatures should be kept at 68-72° F. Higher temperatures if given for a prolonged period of time can
reduce the plant quality. To delay the development of the crop near the date of marketing, it is possible to lower the night temperature to 55° F,
conversely, the crop can be accelerated by forcing 70-75° F for a few days. Good ventilation is essential. Do not permit humidity to build up.
Fertilizer
Dahlia require continuous fertilization beginning immediately after shoot growth becomes visible. A complete (NPK) fertilizer is required. A slow release
(14-14-14) fertilizer applied as a top-dress can be used. Also a weekly application of 200 ppmN of a 20-20-20 soluble fertilizer
The liquid feed can be used as a supplement to the slow release fertilization if needed. can be used.
Use of Ancymidol (A'Rest)
The only plant growth regulator approved for use in controlling the tuberous-rooted dahlia is ancymidol (A'Rest). For primary height control the
ancymidol must be applied as a soil drench no later than two weeks after planting. More precisely, it should be applied when the shoots are
approximately 1/4" (0.5 cm) long. At the time of application the planting medium must be moist! See variety list for use of A'Rest.
Pinching
Each variety will produce a range of single, double or multiple shooted roots to develop the maximum flowers per pot at the time of marketing,
and to provide better shaped plants, it is necessary that all plants which are producing only a single strong shoots must be pinched. It appears that
the best stage of development to pinch out the terminal shoot is after the 3rd or 4th pair of leaves have unfolded. Dahlia normally form 2-4
pair of leaves. A pinch at this time will force 2-4 lateral breaks to produce more flowers.
Cultivated Stock
All roots must be from cultivated stock, especially grown for pot culture. Do not use regular, uncultivated stock.
For Cut
Planting, Medium, Watering & Fertilizer
Use a well drained soil pH 6-7 and a low soluble salt. Plant in full sun. Plant the crown slightly above the soil. Do not split roots prior to planting. Place
dahlias in rows 2 feet on center, while the rows should be 2-3 feet apart. Dahlias are a water loving plant. In dry conditions be sure to add water to
allow for proper growth. Continuous feeding is required, beginning at shoot emergence. Use a weekly application of 200 ppmN of a 20-20-20 or a topdress
application of a slow release 14-14-14 fertilizer. Cut when petals begin to loosen. Dahlias can be cut with or without foliage. Keep in cooler at 40-45° F.
Storage After Arrival Until Planting Time
Upon arrival, inspect the roots for any possible damage. Store the roots in the closed shipping container at 45-50° F up to 2-3 weeks.
Forcing Dahlia for Pot
Greenhouse Culture
The greenhouse requirements and general growth pattern of the Dahlia are quite similar to those of the Easter Lily. Dahlias begin to shoot
growth slowly and unevenly and will range from 1-2-3 or more shoots. DO NOT PERMIT MORE THAN 3 SHOOTS TO DEVELOP FROM THE CROWN.
Watering
After planting, water the medium thoroughly. Subsequently, for the initial 4-5 weeks keep the medium moist but not wet. After the shoots begin to
develop water should be applied directly to the medium. Avoid wetting the foliage whenever possible.Once the flowerbuds become visible, watering will
have to be more frequently and thoroughly. This is due to increased water requirements of the plant. On the date that A'Rest is to be applied as a
soil drench, the medium must be moist. Water the evening before and then apply the A'Rest the next morning.
Potting, Planting Medium, Spacing
Normally Dahlia are forced single in a 6" (15 cm) pot, either 3/4 or standard size pots can be used. Also either clay or plastic pots can be used but
plastic pots are preferred. Dahlia require a well drained, granulated medium. It should be sterile, have a pH of 6-7 and be low in soluble salts.
Because the application of A'Rest must be as a soil drench, the texture of the medium is critical. It should consist of equal parts of loamy soil,
a coarse aggregate, and peat. The organic matter should not be over 1/3 of mixture and the medium should not contain bark.
Light, Temperature & Ventilation in Greenhouse
Dahlia must be exposed to full sunlight throughout the greenhouse growing period. Dahlia should be forced at a minimum night temperature of 62-65° F.
Lower temperature will delay flowering. Day temperatures should be kept at 68-72° F. Higher temperatures if given for a prolonged period of time can
reduce the plant quality. To delay the development of the crop near the date of marketing, it is possible to lower the night temperature to 55° F,
conversely, the crop can be accelerated by forcing 70-75° F for a few days. Good ventilation is essential. Do not permit humidity to build up.
Fertilizer
Dahlia require continuous fertilization beginning immediately after shoot growth becomes visible. A complete (NPK) fertilizer is required. A slow release
(14-14-14) fertilizer applied as a top-dress can be used. Also a weekly application of 200 ppmN of a 20-20-20 soluble fertilizer
The liquid feed can be used as a supplement to the slow release fertilization if needed. can be used.
Use of Ancymidol (A'Rest)
The only plant growth regulator approved for use in controlling the tuberous-rooted dahlia is ancymidol (A'Rest). For primary height control the
ancymidol must be applied as a soil drench no later than two weeks after planting. More precisely, it should be applied when the shoots are
approximately 1/4" (0.5 cm) long. At the time of application the planting medium must be moist! See variety list for use of A'Rest.
Pinching
Each variety will produce a range of single, double or multiple shooted roots to develop the maximum flowers per pot at the time of marketing,
and to provide better shaped plants, it is necessary that all plants which are producing only a single strong shoots must be pinched. It appears that
the best stage of development to pinch out the terminal shoot is after the 3rd or 4th pair of leaves have unfolded. Dahlia normally form 2-4
pair of leaves. A pinch at this time will force 2-4 lateral breaks to produce more flowers.
Cultivated Stock
All roots must be from cultivated stock, especially grown for pot culture. Do not use regular, uncultivated stock.
For Cut
Planting, Medium, Watering & Fertilizer
Use a well drained soil pH 6-7 and a low soluble salt. Plant in full sun. Plant the crown slightly above the soil. Do not split roots prior to planting. Place
dahlias in rows 2 feet on center, while the rows should be 2-3 feet apart. Dahlias are a water loving plant. In dry conditions be sure to add water to
allow for proper growth. Continuous feeding is required, beginning at shoot emergence. Use a weekly application of 200 ppmN of a 20-20-20 or a topdress
application of a slow release 14-14-14 fertilizer. Cut when petals begin to loosen. Dahlias can be cut with or without foliage. Keep in cooler at 40-45° F.
Storage After Arrival Until Planting Time
Upon arrival, inspect the roots for any possible damage. Store the roots in the closed shipping container at 45-50° F up to 2-3 weeks.
Forcing Dahlia for Pot
Greenhouse Culture
The greenhouse requirements and general growth pattern of the Dahlia are quite similar to those of the Easter Lily. Dahlias begin to shoot
growth slowly and unevenly and will range from 1-2-3 or more shoots. DO NOT PERMIT MORE THAN 3 SHOOTS TO DEVELOP FROM THE CROWN.
Watering
After planting, water the medium thoroughly. Subsequently, for the initial 4-5 weeks keep the medium moist but not wet. After the shoots begin to
develop water should be applied directly to the medium. Avoid wetting the foliage whenever possible.Once the flowerbuds become visible, watering will
have to be more frequently and thoroughly. This is due to increased water requirements of the plant. On the date that A'Rest is to be applied as a
soil drench, the medium must be moist. Water the evening before and then apply the A'Rest the next morning.
Potting, Planting Medium, Spacing
Normally Dahlia are forced single in a 6" (15 cm) pot, either 3/4 or standard size pots can be used. Also either clay or plastic pots can be used but
plastic pots are preferred. Dahlia require a well drained, granulated medium. It should be sterile, have a pH of 6-7 and be low in soluble salts.
Because the application of A'Rest must be as a soil drench, the texture of the medium is critical. It should consist of equal parts of loamy soil,
a coarse aggregate, and peat. The organic matter should not be over 1/3 of mixture and the medium should not contain bark.
Light, Temperature & Ventilation in Greenhouse
Dahlia must be exposed to full sunlight throughout the greenhouse growing period. Dahlia should be forced at a minimum night temperature of 62-65° F.
Lower temperature will delay flowering. Day temperatures should be kept at 68-72° F. Higher temperatures if given for a prolonged period of time can
reduce the plant quality. To delay the development of the crop near the date of marketing, it is possible to lower the night temperature to 55° F,
conversely, the crop can be accelerated by forcing 70-75° F for a few days. Good ventilation is essential. Do not permit humidity to build up.
Fertilizer
Dahlia require continuous fertilization beginning immediately after shoot growth becomes visible. A complete (NPK) fertilizer is required. A slow release
(14-14-14) fertilizer applied as a top-dress can be used. Also a weekly application of 200 ppmN of a 20-20-20 soluble fertilizer
The liquid feed can be used as a supplement to the slow release fertilization if needed. can be used.
Use of Ancymidol (A'Rest)
The only plant growth regulator approved for use in controlling the tuberous-rooted dahlia is ancymidol (A'Rest). For primary height control the
ancymidol must be applied as a soil drench no later than two weeks after planting. More precisely, it should be applied when the shoots are
approximately 1/4" (0.5 cm) long. At the time of application the planting medium must be moist! See variety list for use of A'Rest.
Pinching
Each variety will produce a range of single, double or multiple shooted roots to develop the maximum flowers per pot at the time of marketing,
and to provide better shaped plants, it is necessary that all plants which are producing only a single strong shoots must be pinched. It appears that
the best stage of development to pinch out the terminal shoot is after the 3rd or 4th pair of leaves have unfolded. Dahlia normally form 2-4
pair of leaves. A pinch at this time will force 2-4 lateral breaks to produce more flowers.
Cultivated Stock
All roots must be from cultivated stock, especially grown for pot culture. Do not use regular, uncultivated stock.
For Cut
Planting, Medium, Watering & Fertilizer
Use a well drained soil pH 6-7 and a low soluble salt. Plant in full sun. Plant the crown slightly above the soil. Do not split roots prior to planting. Place
dahlias in rows 2 feet on center, while the rows should be 2-3 feet apart. Dahlias are a water loving plant. In dry conditions be sure to add water to
allow for proper growth. Continuous feeding is required, beginning at shoot emergence. Use a weekly application of 200 ppmN of a 20-20-20 or a topdress
application of a slow release 14-14-14 fertilizer. Cut when petals begin to loosen. Dahlias can be cut with or without foliage. Keep in cooler at 40-45° F.
Storage After Arrival Until Planting Time
Upon arrival, inspect the roots for any possible damage. Store the roots in the closed shipping container at 45-50° F up to 2-3 weeks.
Forcing Dahlia for Pot
Greenhouse Culture
The greenhouse requirements and general growth pattern of the Dahlia are quite similar to those of the Easter Lily. Dahlias begin to shoot
growth slowly and unevenly and will range from 1-2-3 or more shoots. DO NOT PERMIT MORE THAN 3 SHOOTS TO DEVELOP FROM THE CROWN.
Watering
After planting, water the medium thoroughly. Subsequently, for the initial 4-5 weeks keep the medium moist but not wet. After the shoots begin to
develop water should be applied directly to the medium. Avoid wetting the foliage whenever possible.Once the flowerbuds become visible, watering will
have to be more frequently and thoroughly. This is due to increased water requirements of the plant. On the date that A'Rest is to be applied as a
soil drench, the medium must be moist. Water the evening before and then apply the A'Rest the next morning.
Potting, Planting Medium, Spacing
Normally Dahlia are forced single in a 6" (15 cm) pot, either 3/4 or standard size pots can be used. Also either clay or plastic pots can be used but
plastic pots are preferred. Dahlia require a well drained, granulated medium. It should be sterile, have a pH of 6-7 and be low in soluble salts.
Because the application of A'Rest must be as a soil drench, the texture of the medium is critical. It should consist of equal parts of loamy soil,
a coarse aggregate, and peat. The organic matter should not be over 1/3 of mixture and the medium should not contain bark.
Light, Temperature & Ventilation in Greenhouse
Dahlia must be exposed to full sunlight throughout the greenhouse growing period. Dahlia should be forced at a minimum night temperature of 62-65° F.
Lower temperature will delay flowering. Day temperatures should be kept at 68-72° F. Higher temperatures if given for a prolonged period of time can
reduce the plant quality. To delay the development of the crop near the date of marketing, it is possible to lower the night temperature to 55° F,
conversely, the crop can be accelerated by forcing 70-75° F for a few days. Good ventilation is essential. Do not permit humidity to build up.
Fertilizer
Dahlia require continuous fertilization beginning immediately after shoot growth becomes visible. A complete (NPK) fertilizer is required. A slow release
(14-14-14) fertilizer applied as a top-dress can be used. Also a weekly application of 200 ppmN of a 20-20-20 soluble fertilizer
The liquid feed can be used as a supplement to the slow release fertilization if needed. can be used.
Use of Ancymidol (A'Rest)
The only plant growth regulator approved for use in controlling the tuberous-rooted dahlia is ancymidol (A'Rest). For primary height control the
ancymidol must be applied as a soil drench no later than two weeks after planting. More precisely, it should be applied when the shoots are
approximately 1/4" (0.5 cm) long. At the time of application the planting medium must be moist! See variety list for use of A'Rest.
Pinching
Each variety will produce a range of single, double or multiple shooted roots to develop the maximum flowers per pot at the time of marketing,
and to provide better shaped plants, it is necessary that all plants which are producing only a single strong shoots must be pinched. It appears that
the best stage of development to pinch out the terminal shoot is after the 3rd or 4th pair of leaves have unfolded. Dahlia normally form 2-4
pair of leaves. A pinch at this time will force 2-4 lateral breaks to produce more flowers.
Cultivated Stock
All roots must be from cultivated stock, especially grown for pot culture. Do not use regular, uncultivated stock.
For Cut
Planting, Medium, Watering & Fertilizer
Use a well drained soil pH 6-7 and a low soluble salt. Plant in full sun. Plant the crown slightly above the soil. Do not split roots prior to planting. Place
dahlias in rows 2 feet on center, while the rows should be 2-3 feet apart. Dahlias are a water loving plant. In dry conditions be sure to add water to
allow for proper growth. Continuous feeding is required, beginning at shoot emergence. Use a weekly application of 200 ppmN of a 20-20-20 or a topdress
application of a slow release 14-14-14 fertilizer. Cut when petals begin to loosen. Dahlias can be cut with or without foliage. Keep in cooler at 40-45° F.
Storage After Arrival Until Planting Time
Upon arrival, inspect the roots for any possible damage. Store the roots in the closed shipping container at 45-50° F up to 2-3 weeks.
Forcing Dahlia for Pot
Greenhouse Culture
The greenhouse requirements and general growth pattern of the Dahlia are quite similar to those of the Easter Lily. Dahlias begin to shoot
growth slowly and unevenly and will range from 1-2-3 or more shoots. DO NOT PERMIT MORE THAN 3 SHOOTS TO DEVELOP FROM THE CROWN.
Watering
After planting, water the medium thoroughly. Subsequently, for the initial 4-5 weeks keep the medium moist but not wet. After the shoots begin to
develop water should be applied directly to the medium. Avoid wetting the foliage whenever possible.Once the flowerbuds become visible, watering will
have to be more frequently and thoroughly. This is due to increased water requirements of the plant. On the date that A'Rest is to be applied as a
soil drench, the medium must be moist. Water the evening before and then apply the A'Rest the next morning.
Potting, Planting Medium, Spacing
Normally Dahlia are forced single in a 6" (15 cm) pot, either 3/4 or standard size pots can be used. Also either clay or plastic pots can be used but
plastic pots are preferred. Dahlia require a well drained, granulated medium. It should be sterile, have a pH of 6-7 and be low in soluble salts.
Because the application of A'Rest must be as a soil drench, the texture of the medium is critical. It should consist of equal parts of loamy soil,
a coarse aggregate, and peat. The organic matter should not be over 1/3 of mixture and the medium should not contain bark.
Light, Temperature & Ventilation in Greenhouse
Dahlia must be exposed to full sunlight throughout the greenhouse growing period. Dahlia should be forced at a minimum night temperature of 62-65° F.
Lower temperature will delay flowering. Day temperatures should be kept at 68-72° F. Higher temperatures if given for a prolonged period of time can
reduce the plant quality. To delay the development of the crop near the date of marketing, it is possible to lower the night temperature to 55° F,
conversely, the crop can be accelerated by forcing 70-75° F for a few days. Good ventilation is essential. Do not permit humidity to build up.
Fertilizer
Dahlia require continuous fertilization beginning immediately after shoot growth becomes visible. A complete (NPK) fertilizer is required. A slow release
(14-14-14) fertilizer applied as a top-dress can be used. Also a weekly application of 200 ppmN of a 20-20-20 soluble fertilizer
The liquid feed can be used as a supplement to the slow release fertilization if needed. can be used.
Use of Ancymidol (A'Rest)
The only plant growth regulator approved for use in controlling the tuberous-rooted dahlia is ancymidol (A'Rest). For primary height control the
ancymidol must be applied as a soil drench no later than two weeks after planting. More precisely, it should be applied when the shoots are
approximately 1/4" (0.5 cm) long. At the time of application the planting medium must be moist! See variety list for use of A'Rest.
Pinching
Each variety will produce a range of single, double or multiple shooted roots to develop the maximum flowers per pot at the time of marketing,
and to provide better shaped plants, it is necessary that all plants which are producing only a single strong shoots must be pinched. It appears that
the best stage of development to pinch out the terminal shoot is after the 3rd or 4th pair of leaves have unfolded. Dahlia normally form 2-4
pair of leaves. A pinch at this time will force 2-4 lateral breaks to produce more flowers.
Cultivated Stock
All roots must be from cultivated stock, especially grown for pot culture. Do not use regular, uncultivated stock.
For Cut
Planting, Medium, Watering & Fertilizer
Use a well drained soil pH 6-7 and a low soluble salt. Plant in full sun. Plant the crown slightly above the soil. Do not split roots prior to planting. Place
dahlias in rows 2 feet on center, while the rows should be 2-3 feet apart. Dahlias are a water loving plant. In dry conditions be sure to add water to
allow for proper growth. Continuous feeding is required, beginning at shoot emergence. Use a weekly application of 200 ppmN of a 20-20-20 or a topdress
application of a slow release 14-14-14 fertilizer. Cut when petals begin to loosen. Dahlias can be cut with or without foliage. Keep in cooler at 40-45° F.
Planting
Dig hole 1/3 larger than root system or bulb and make the hole 2-3 " deep. Add a thin layer of base soil back in the bottom of the hole.
Root systems (rhizomes) like Trillium and Virginia Blue Bells should be placed on their side, but bulbs and corms should be placed
upright in the hole so that the pointed end is upwards. Fill with soil and water thoroughly.
Watering
Water every three to four days for the first week if it does not rain.
Planting
Dig hole 1/3 larger than root system or bulb and make the hole 2-3 " deep. Add a thin layer of base soil back in the bottom of the hole.
Root systems (rhizomes) like Trillium and Virginia Blue Bells should be placed on their side, but bulbs and corms should be placed
upright in the hole so that the pointed end is upwards. Fill with soil and water thoroughly.
Watering
Water every three to four days for the first week if it does not rain.
Storage After Arrival
Unpack immediately upon arrival, ventilate if not immediately planted. Store at 58-65°F.
Pre-sprouting (preparation)
Pre-sprounting gives the bulbs a better and more even start for optimal rooting and flower development.
Soak the bags for 12 hours in water at a temperature of 70-80 degree F with 5 gr GA3 (Gibberellic Acid) per 100 liter maintain temp. of 70-80 degree F during this 12 hour period. Make sure that the whole bag is submerged in water for the whole period!
Dip the bulbs in a fungicide for about 15 minutes: 1% of Topsin (active ingredients: thiofanaat-methyand 500 g/l) + ½% Securo (active ingredients: pyraclostrobin 100 g/l + folpet 300 g/l).
Directly after soaking the bulbs for 12 hours and fungicide dip you need to plant bulbs directly in the ground, keep the soil moist. When direct planting is not possible, store the Ranunculus in a coldstore at 41 degrees F.
It is very important to make sure that bulbs do not dry out after planting. (When bulbs dry out you will have loss of germination of the bulbs).
Prior to planting:
Take a soil sample (before you start preparing the soil and bulbs).
Fertilizing depends on a soil and water sample / analysis.
PH: 5.8 – 6.3;
EC: 1.3 to 1.5.
Planting/Spacing
Plant in a moist and well-drained soil free from weeds, with a soil temperature below the 50 degrees F.
Plant approximately ½ to ¾ inch deep, spacing bulbs 6-8 inches apart within the rows and space each row 6-8 inches apart, max of 4 rows per bed.
Recommended to use 1 layer of nets for support.
Plant the bulbs with the center of the bulb facing up and the end of the roots down. Be careful of not damaging the bulbs when planting. Water bulbs after planting so the soil is moist and encloses around the bulbs.
Watering
In the beginning, utilize overhead watering. Later, water only by drip hoses.
Very important especially in the beginning of the crop to keep the soil moist at all times!
Fertilization
Until some years ago, only phosphate was known for a better root development. Now we know that the plants have a preferred order as it comes to the absorption of elements. In the first stage of growth they need sulfur, followed in order by boron, silicon, calcium, nitrogen, magnesium and last but not least phosphorus.
The availability of these elements – especially boron, silicon and calcium – are essential for a good start of the plants. If one of these elements is not (enough) available, the chain will be broken and the growing process might start slower or with more problems.
Apply your fertilizer according to your soil sample.
Approximately 1 week after planting, drench the soil with a ‘cocktail’ so the rooting is easier:
• Risolex;
• Topsin;
• Proplant/previcure.
Growing
First 2-4 weeks you will see your Ranunculus sprouting in the ground, try to keep night temperatures around 15 degrees C at night and during day as cool as possible.
When plants have sprouted and are growing for about 4-5 weeks and you have sufficient foliage on the bulbs growing lower the night temperature to as cool as possible. (no frost) You get best quality Ranunculus when growing is as cool as possible, you can grow as cool as 2-4 degrees C. if possible keep sides open of greenhouse.
During night keep well enough ventilated to prevent mildew.
Grow Ranunculus as cool as possible.
Diseases and insects:
- Botrytis and Mildew: spray with Flint, Ortiva or Switch (the only remedy that works curatively at low temperatures) and use leaf fertilizers + trace elements to make the leaves harder.
- Leaf spot: spray preventive with Luna Privilege and use leaf fertilizers + trace elements to make the leaves harder. Because this disease is very contagious, it is important to spray preventive
- Xanthomonas: gives round, purple-red spots, often with a yellow circle. Spray preventively with, for example, Serenade or Ranman Top. And use leaf fertilizers + trace elements to make the leaves harder.
- Erwina: spray preventive with copper oxychloride.
- Do regular spotting in the greenhouse to check for: Caterpillars, Aphids (Tepeki), Leaf Miners (Vertimec), Spider Mites, Thrips and Whiteflies. And spray when needed.
Flower harvest and treatment during harvest:
Do not pull the stems from the bulb always cut with knife!
Cool water buckets night before in cooler to have cold water in harvesting buckets.
When flowers are cut early in the morning, as soon as possible place them in water at a temperature of 40 degrees F (even before bunching) and store them in a cooler. If the crop is harvested later during the day and the stem dries in and will absorb less water, which is why it is important to place directly in water after cutting.
Cutting stage Ranunculus Romance:
Llet the flowers open and close for 3 days and then cut the flowers for maximum size. (this gives you larger flowers and longer vase life) .Harvest Ranunculus Romance flowers only early in the morning, cutting stem at ground level.
Add a Chlorine tablet of Florissant 520 into a bucket with water to be placed in the cooler.
More Details
Storage After Arrival
Unpack immediately upon arrival, ventilate if not immediately planted. Store at 58-65°F.
Pre-sprouting (preparation)
Pre-sprounting gives the bulbs a better and more even start for optimal rooting and flower development.
Soak the bags for 12 hours in water at a temperature of 70-80 degree F with 5 gr GA3 (Gibberellic Acid) per 100 liter maintain temp. of 70-80 degree F during this 12 hour period. Make sure that the whole bag is submerged in water for the whole period!
Dip the bulbs in a fungicide for about 15 minutes: 1% of Topsin (active ingredients: thiofanaat-methyand 500 g/l) + ½% Securo (active ingredients: pyraclostrobin 100 g/l + folpet 300 g/l).
Directly after soaking the bulbs for 12 hours and fungicide dip you need to plant bulbs directly in the ground, keep the soil moist. When direct planting is not possible, store the Ranunculus in a coldstore at 41 degrees F.
It is very important to make sure that bulbs do not dry out after planting. (When bulbs dry out you will have loss of germination of the bulbs).
Prior to planting:
Take a soil sample (before you start preparing the soil and bulbs).
Fertilizing depends on a soil and water sample / analysis.
PH: 5.8 – 6.3;
EC: 1.3 to 1.5.
Planting/Spacing
Plant in a moist and well-drained soil free from weeds, with a soil temperature below the 50 degrees F.
Plant approximately ½ to ¾ inch deep, spacing bulbs 6-8 inches apart within the rows and space each row 6-8 inches apart, max of 4 rows per bed.
Recommended to use 1 layer of nets for support.
Plant the bulbs with the center of the bulb facing up and the end of the roots down. Be careful of not damaging the bulbs when planting. Water bulbs after planting so the soil is moist and encloses around the bulbs.
Watering
In the beginning, utilize overhead watering. Later, water only by drip hoses.
Very important especially in the beginning of the crop to keep the soil moist at all times!
Fertilization
Until some years ago, only phosphate was known for a better root development. Now we know that the plants have a preferred order as it comes to the absorption of elements. In the first stage of growth they need sulfur, followed in order by boron, silicon, calcium, nitrogen, magnesium and last but not least phosphorus.
The availability of these elements – especially boron, silicon and calcium – are essential for a good start of the plants. If one of these elements is not (enough) available, the chain will be broken and the growing process might start slower or with more problems.
Apply your fertilizer according to your soil sample.
Approximately 1 week after planting, drench the soil with a ‘cocktail’ so the rooting is easier:
• Risolex;
• Topsin;
• Proplant/previcure.
Growing
First 2-4 weeks you will see your Ranunculus sprouting in the ground, try to keep night temperatures around 15 degrees C at night and during day as cool as possible.
When plants have sprouted and are growing for about 4-5 weeks and you have sufficient foliage on the bulbs growing lower the night temperature to as cool as possible. (no frost) You get best quality Ranunculus when growing is as cool as possible, you can grow as cool as 2-4 degrees C. if possible keep sides open of greenhouse.
During night keep well enough ventilated to prevent mildew.
Grow Ranunculus as cool as possible.
Diseases and insects:
- Botrytis and Mildew: spray with Flint, Ortiva or Switch (the only remedy that works curatively at low temperatures) and use leaf fertilizers + trace elements to make the leaves harder.
- Leaf spot: spray preventive with Luna Privilege and use leaf fertilizers + trace elements to make the leaves harder. Because this disease is very contagious, it is important to spray preventive
- Xanthomonas: gives round, purple-red spots, often with a yellow circle. Spray preventively with, for example, Serenade or Ranman Top. And use leaf fertilizers + trace elements to make the leaves harder.
- Erwina: spray preventive with copper oxychloride.
- Do regular spotting in the greenhouse to check for: Caterpillars, Aphids (Tepeki), Leaf Miners (Vertimec), Spider Mites, Thrips and Whiteflies. And spray when needed.
Flower harvest and treatment during harvest:
Do not pull the stems from the bulb always cut with knife!
Cool water buckets night before in cooler to have cold water in harvesting buckets.
When flowers are cut early in the morning, as soon as possible place them in water at a temperature of 40 degrees F (even before bunching) and store them in a cooler. If the crop is harvested later during the day and the stem dries in and will absorb less water, which is why it is important to place directly in water after cutting.
Cutting stage Ranunculus Romance:
Llet the flowers open and close for 3 days and then cut the flowers for maximum size. (this gives you larger flowers and longer vase life) .Harvest Ranunculus Romance flowers only early in the morning, cutting stem at ground level.
Add a Chlorine tablet of Florissant 520 into a bucket with water to be placed in the cooler.
More Details
Storage After Arrival
Unpack immediately upon arrival, ventilate if not immediately planted. Store at 58-65°F.
Pre-sprouting (preparation)
Pre-sprounting gives the bulbs a better and more even start for optimal rooting and flower development.
Soak the bags for 12 hours in water at a temperature of 70-80 degree F with 5 gr GA3 (Gibberellic Acid) per 100 liter maintain temp. of 70-80 degree F during this 12 hour period. Make sure that the whole bag is submerged in water for the whole period!
Dip the bulbs in a fungicide for about 15 minutes: 1% of Topsin (active ingredients: thiofanaat-methyand 500 g/l) + ½% Securo (active ingredients: pyraclostrobin 100 g/l + folpet 300 g/l).
Directly after soaking the bulbs for 12 hours and fungicide dip you need to plant bulbs directly in the ground, keep the soil moist. When direct planting is not possible, store the Ranunculus in a coldstore at 41 degrees F.
It is very important to make sure that bulbs do not dry out after planting. (When bulbs dry out you will have loss of germination of the bulbs).
Prior to planting:
Take a soil sample (before you start preparing the soil and bulbs).
Fertilizing depends on a soil and water sample / analysis.
PH: 5.8 – 6.3;
EC: 1.3 to 1.5.
Planting/Spacing
Plant in a moist and well-drained soil free from weeds, with a soil temperature below the 50 degrees F.
Plant approximately ½ to ¾ inch deep, spacing bulbs 6-8 inches apart within the rows and space each row 6-8 inches apart, max of 4 rows per bed.
Recommended to use 1 layer of nets for support.
Plant the bulbs with the center of the bulb facing up and the end of the roots down. Be careful of not damaging the bulbs when planting. Water bulbs after planting so the soil is moist and encloses around the bulbs.
Watering
In the beginning, utilize overhead watering. Later, water only by drip hoses.
Very important especially in the beginning of the crop to keep the soil moist at all times!
Fertilization
Until some years ago, only phosphate was known for a better root development. Now we know that the plants have a preferred order as it comes to the absorption of elements. In the first stage of growth they need sulfur, followed in order by boron, silicon, calcium, nitrogen, magnesium and last but not least phosphorus.
The availability of these elements – especially boron, silicon and calcium – are essential for a good start of the plants. If one of these elements is not (enough) available, the chain will be broken and the growing process might start slower or with more problems.
Apply your fertilizer according to your soil sample.
Approximately 1 week after planting, drench the soil with a ‘cocktail’ so the rooting is easier:
• Risolex;
• Topsin;
• Proplant/previcure.
Growing
First 2-4 weeks you will see your Ranunculus sprouting in the ground, try to keep night temperatures around 15 degrees C at night and during day as cool as possible.
When plants have sprouted and are growing for about 4-5 weeks and you have sufficient foliage on the bulbs growing lower the night temperature to as cool as possible. (no frost) You get best quality Ranunculus when growing is as cool as possible, you can grow as cool as 2-4 degrees C. if possible keep sides open of greenhouse.
During night keep well enough ventilated to prevent mildew.
Grow Ranunculus as cool as possible.
Diseases and insects:
- Botrytis and Mildew: spray with Flint, Ortiva or Switch (the only remedy that works curatively at low temperatures) and use leaf fertilizers + trace elements to make the leaves harder.
- Leaf spot: spray preventive with Luna Privilege and use leaf fertilizers + trace elements to make the leaves harder. Because this disease is very contagious, it is important to spray preventive
- Xanthomonas: gives round, purple-red spots, often with a yellow circle. Spray preventively with, for example, Serenade or Ranman Top. And use leaf fertilizers + trace elements to make the leaves harder.
- Erwina: spray preventive with copper oxychloride.
- Do regular spotting in the greenhouse to check for: Caterpillars, Aphids (Tepeki), Leaf Miners (Vertimec), Spider Mites, Thrips and Whiteflies. And spray when needed.
Flower harvest and treatment during harvest:
Do not pull the stems from the bulb always cut with knife!
Cool water buckets night before in cooler to have cold water in harvesting buckets.
When flowers are cut early in the morning, as soon as possible place them in water at a temperature of 40 degrees F (even before bunching) and store them in a cooler. If the crop is harvested later during the day and the stem dries in and will absorb less water, which is why it is important to place directly in water after cutting.
Cutting stage Ranunculus Romance:
Llet the flowers open and close for 3 days and then cut the flowers for maximum size. (this gives you larger flowers and longer vase life) .Harvest Ranunculus Romance flowers only early in the morning, cutting stem at ground level.
Add a Chlorine tablet of Florissant 520 into a bucket with water to be placed in the cooler.
More Details
Storage After Arrival
Unpacked immediately upon arrival, ventilate if not immediately planted. Ideal storage temperatures are 50-60 degrees Fahrenheit
Planting in Zones 8 and warmer (Fall Planting)
Choose a location with well-draining soil and that does not still puddle 5 or 6 hours after a hard rain. Adding organic matter of at least 2-3in will improve drainage. Plant bulbs 4-6in apart, 2-3in deep. Water after planting to encourage root development. Refrain from watering until leaves sprout (most likely will occur in spring).
Planting in Zones 7 and colder (Spring Planting)
Growing in Containers:
Fill a container with drainage holes with good-quality, well-draining potting mix. Leaving 3-4 inches between bulbs will allow plenty of room for growth. Plant about 2 inches deep. Water after planting. Once the danger of a hard frost has passed, place the container in a location that receives full sun all day.
Growing in Outdoor Landscape Beds:
About a month before last average frost, soak the bulbs 3-4 hours (but not more than 4 hours) in tepid water before planting outside in a well-drained location with full sun.
Growing in Greenhouses:
Follow instructions for container growing. Ideal greenhouse temperatures are 45-48 degrees Fahrenheit at night and 58-65 degrees Fahrenheit during the day. Temperatures above 70 degrees Fahrenheit should be avoided. Following soaking instructions for outdoor landscape beds will give ranunculus a head start on growth.
Watering/Fertilizer/Growing
Begin watering once plants begin to grow being careful not to allow the soil to become soggy. Fertilizing is not necessary. In warmer climates, wait until foliage dies back before completely removing it. In colder climates, ranunculus are annuals and bulbs will need to be replaced each year. On average, ranunculus begin to bloom 90 days after planting. Flowering typically lasts approximately 6 to 7 weeks for fall planted bulbs and 4 to 6 weeks for spring planted bulbs.
More Details
Storage After Arrival
Unpacked immediately upon arrival, ventilate if not immediately planted. Ideal storage temperatures are 50-60 degrees Fahrenheit
Planting in Zones 8 and warmer (Fall Planting)
Choose a location with well-draining soil and that does not still puddle 5 or 6 hours after a hard rain. Adding organic matter of at least 2-3in will improve drainage. Plant bulbs 4-6in apart, 2-3in deep. Water after planting to encourage root development. Refrain from watering until leaves sprout (most likely will occur in spring).
Planting in Zones 7 and colder (Spring Planting)
Growing in Containers:
Fill a container with drainage holes with good-quality, well-draining potting mix. Leaving 3-4 inches between bulbs will allow plenty of room for growth. Plant about 2 inches deep. Water after planting. Once the danger of a hard frost has passed, place the container in a location that receives full sun all day.
Growing in Outdoor Landscape Beds:
About a month before last average frost, soak the bulbs 3-4 hours (but not more than 4 hours) in tepid water before planting outside in a well-drained location with full sun.
Growing in Greenhouses:
Follow instructions for container growing. Ideal greenhouse temperatures are 45-48 degrees Fahrenheit at night and 58-65 degrees Fahrenheit during the day. Temperatures above 70 degrees Fahrenheit should be avoided. Following soaking instructions for outdoor landscape beds will give ranunculus a head start on growth.
Watering/Fertilizer/Growing
Begin watering once plants begin to grow being careful not to allow the soil to become soggy. Fertilizing is not necessary. In warmer climates, wait until foliage dies back before completely removing it. In colder climates, ranunculus are annuals and bulbs will need to be replaced each year. On average, ranunculus begin to bloom 90 days after planting. Flowering typically lasts approximately 6 to 7 weeks for fall planted bulbs and 4 to 6 weeks for spring planted bulbs.
More Details
Storage After Arrival
Unpacked immediately upon arrival, ventilate if not immediately planted. Ideal storage temperatures are 50-60 degrees Fahrenheit
Planting in Zones 8 and warmer (Fall Planting)
Choose a location with well-draining soil and that does not still puddle 5 or 6 hours after a hard rain. Adding organic matter of at least 2-3in will improve drainage. Plant bulbs 4-6in apart, 2-3in deep. Water after planting to encourage root development. Refrain from watering until leaves sprout (most likely will occur in spring).
Planting in Zones 7 and colder (Spring Planting)
Growing in Containers:
Fill a container with drainage holes with good-quality, well-draining potting mix. Leaving 3-4 inches between bulbs will allow plenty of room for growth. Plant about 2 inches deep. Water after planting. Once the danger of a hard frost has passed, place the container in a location that receives full sun all day.
Growing in Outdoor Landscape Beds:
About a month before last average frost, soak the bulbs 3-4 hours (but not more than 4 hours) in tepid water before planting outside in a well-drained location with full sun.
Growing in Greenhouses:
Follow instructions for container growing. Ideal greenhouse temperatures are 45-48 degrees Fahrenheit at night and 58-65 degrees Fahrenheit during the day. Temperatures above 70 degrees Fahrenheit should be avoided. Following soaking instructions for outdoor landscape beds will give ranunculus a head start on growth.
Watering/Fertilizer/Growing
Begin watering once plants begin to grow being careful not to allow the soil to become soggy. Fertilizing is not necessary. In warmer climates, wait until foliage dies back before completely removing it. In colder climates, ranunculus are annuals and bulbs will need to be replaced each year. On average, ranunculus begin to bloom 90 days after planting. Flowering typically lasts approximately 6 to 7 weeks for fall planted bulbs and 4 to 6 weeks for spring planted bulbs.
More Details
Storage After Arrival
Unpacked immediately upon arrival, ventilate if not immediately planted. Ideal storage temperatures are 50-60 degrees Fahrenheit
Planting in Zones 8 and warmer (Fall Planting)
Choose a location with well-draining soil and that does not still puddle 5 or 6 hours after a hard rain. Adding organic matter of at least 2-3in will improve drainage. Plant bulbs 4-6in apart, 2-3in deep. Water after planting to encourage root development. Refrain from watering until leaves sprout (most likely will occur in spring).
Planting in Zones 7 and colder (Spring Planting)
Growing in Containers:
Fill a container with drainage holes with good-quality, well-draining potting mix. Leaving 3-4 inches between bulbs will allow plenty of room for growth. Plant about 2 inches deep. Water after planting. Once the danger of a hard frost has passed, place the container in a location that receives full sun all day.
Growing in Outdoor Landscape Beds:
About a month before last average frost, soak the bulbs 3-4 hours (but not more than 4 hours) in tepid water before planting outside in a well-drained location with full sun.
Growing in Greenhouses:
Follow instructions for container growing. Ideal greenhouse temperatures are 45-48 degrees Fahrenheit at night and 58-65 degrees Fahrenheit during the day. Temperatures above 70 degrees Fahrenheit should be avoided. Following soaking instructions for outdoor landscape beds will give ranunculus a head start on growth.
Watering/Fertilizer/Growing
Begin watering once plants begin to grow being careful not to allow the soil to become soggy. Fertilizing is not necessary. In warmer climates, wait until foliage dies back before completely removing it. In colder climates, ranunculus are annuals and bulbs will need to be replaced each year. On average, ranunculus begin to bloom 90 days after planting. Flowering typically lasts approximately 6 to 7 weeks for fall planted bulbs and 4 to 6 weeks for spring planted bulbs.
More Details
Storage After Arrival
Unpacked immediately upon arrival, ventilate if not immediately planted. Ideal storage temperatures are 50-60 degrees Fahrenheit
Planting in Zones 8 and warmer (Fall Planting)
Choose a location with well-draining soil and that does not still puddle 5 or 6 hours after a hard rain. Adding organic matter of at least 2-3in will improve drainage. Plant bulbs 4-6in apart, 2-3in deep. Water after planting to encourage root development. Refrain from watering until leaves sprout (most likely will occur in spring).
Planting in Zones 7 and colder (Spring Planting)
Growing in Containers:
Fill a container with drainage holes with good-quality, well-draining potting mix. Leaving 3-4 inches between bulbs will allow plenty of room for growth. Plant about 2 inches deep. Water after planting. Once the danger of a hard frost has passed, place the container in a location that receives full sun all day.
Growing in Outdoor Landscape Beds:
About a month before last average frost, soak the bulbs 3-4 hours (but not more than 4 hours) in tepid water before planting outside in a well-drained location with full sun.
Growing in Greenhouses:
Follow instructions for container growing. Ideal greenhouse temperatures are 45-48 degrees Fahrenheit at night and 58-65 degrees Fahrenheit during the day. Temperatures above 70 degrees Fahrenheit should be avoided. Following soaking instructions for outdoor landscape beds will give ranunculus a head start on growth.
Watering/Fertilizer/Growing
Begin watering once plants begin to grow being careful not to allow the soil to become soggy. Fertilizing is not necessary. In warmer climates, wait until foliage dies back before completely removing it. In colder climates, ranunculus are annuals and bulbs will need to be replaced each year. On average, ranunculus begin to bloom 90 days after planting. Flowering typically lasts approximately 6 to 7 weeks for fall planted bulbs and 4 to 6 weeks for spring planted bulbs.
More Details
Storage After Arrival
Unpacked immediately upon arrival, ventilate if not immediately planted. Ideal storage temperatures are 50-60 degrees Fahrenheit
Planting in Zones 8 and warmer (Fall Planting)
Choose a location with well-draining soil and that does not still puddle 5 or 6 hours after a hard rain. Adding organic matter of at least 2-3in will improve drainage. Plant bulbs 4-6in apart, 2-3in deep. Water after planting to encourage root development. Refrain from watering until leaves sprout (most likely will occur in spring).
Planting in Zones 7 and colder (Spring Planting)
Growing in Containers:
Fill a container with drainage holes with good-quality, well-draining potting mix. Leaving 3-4 inches between bulbs will allow plenty of room for growth. Plant about 2 inches deep. Water after planting. Once the danger of a hard frost has passed, place the container in a location that receives full sun all day.
Growing in Outdoor Landscape Beds:
About a month before last average frost, soak the bulbs 3-4 hours (but not more than 4 hours) in tepid water before planting outside in a well-drained location with full sun.
Growing in Greenhouses:
Follow instructions for container growing. Ideal greenhouse temperatures are 45-48 degrees Fahrenheit at night and 58-65 degrees Fahrenheit during the day. Temperatures above 70 degrees Fahrenheit should be avoided. Following soaking instructions for outdoor landscape beds will give ranunculus a head start on growth.
Watering/Fertilizer/Growing
Begin watering once plants begin to grow being careful not to allow the soil to become soggy. Fertilizing is not necessary. In warmer climates, wait until foliage dies back before completely removing it. In colder climates, ranunculus are annuals and bulbs will need to be replaced each year. On average, ranunculus begin to bloom 90 days after planting. Flowering typically lasts approximately 6 to 7 weeks for fall planted bulbs and 4 to 6 weeks for spring planted bulbs.
More Details
Storage After Arrival
Unpacked immediately upon arrival, ventilate if not immediately planted. Ideal storage temperatures are 50-60 degrees Fahrenheit
Planting in Zones 8 and warmer (Fall Planting)
Choose a location with well-draining soil and that does not still puddle 5 or 6 hours after a hard rain. Adding organic matter of at least 2-3in will improve drainage. Plant bulbs 4-6in apart, 2-3in deep. Water after planting to encourage root development. Refrain from watering until leaves sprout (most likely will occur in spring).
Planting in Zones 7 and colder (Spring Planting)
Growing in Containers:
Fill a container with drainage holes with good-quality, well-draining potting mix. Leaving 3-4 inches between bulbs will allow plenty of room for growth. Plant about 2 inches deep. Water after planting. Once the danger of a hard frost has passed, place the container in a location that receives full sun all day.
Growing in Outdoor Landscape Beds:
About a month before last average frost, soak the bulbs 3-4 hours (but not more than 4 hours) in tepid water before planting outside in a well-drained location with full sun.
Growing in Greenhouses:
Follow instructions for container growing. Ideal greenhouse temperatures are 45-48 degrees Fahrenheit at night and 58-65 degrees Fahrenheit during the day. Temperatures above 70 degrees Fahrenheit should be avoided. Following soaking instructions for outdoor landscape beds will give ranunculus a head start on growth.
Watering/Fertilizer/Growing
Begin watering once plants begin to grow being careful not to allow the soil to become soggy. Fertilizing is not necessary. In warmer climates, wait until foliage dies back before completely removing it. In colder climates, ranunculus are annuals and bulbs will need to be replaced each year. On average, ranunculus begin to bloom 90 days after planting. Flowering typically lasts approximately 6 to 7 weeks for fall planted bulbs and 4 to 6 weeks for spring planted bulbs.
More Details
Storage After Arrival
Unpacked immediately upon arrival, ventilate if not immediately planted. Ideal storage temperatures are 50-60 degrees Fahrenheit
Planting in Zones 8 and warmer (Fall Planting)
Choose a location with well-draining soil and that does not still puddle 5 or 6 hours after a hard rain. Adding organic matter of at least 2-3in will improve drainage. Plant bulbs 4-6in apart, 2-3in deep. Water after planting to encourage root development. Refrain from watering until leaves sprout (most likely will occur in spring).
Planting in Zones 7 and colder (Spring Planting)
Growing in Containers:
Fill a container with drainage holes with good-quality, well-draining potting mix. Leaving 3-4 inches between bulbs will allow plenty of room for growth. Plant about 2 inches deep. Water after planting. Once the danger of a hard frost has passed, place the container in a location that receives full sun all day.
Growing in Outdoor Landscape Beds:
About a month before last average frost, soak the bulbs 3-4 hours (but not more than 4 hours) in tepid water before planting outside in a well-drained location with full sun.
Growing in Greenhouses:
Follow instructions for container growing. Ideal greenhouse temperatures are 45-48 degrees Fahrenheit at night and 58-65 degrees Fahrenheit during the day. Temperatures above 70 degrees Fahrenheit should be avoided. Following soaking instructions for outdoor landscape beds will give ranunculus a head start on growth.
Watering/Fertilizer/Growing
Begin watering once plants begin to grow being careful not to allow the soil to become soggy. Fertilizing is not necessary. In warmer climates, wait until foliage dies back before completely removing it. In colder climates, ranunculus are annuals and bulbs will need to be replaced each year. On average, ranunculus begin to bloom 90 days after planting. Flowering typically lasts approximately 6 to 7 weeks for fall planted bulbs and 4 to 6 weeks for spring planted bulbs.
More Details
Storage After Arrival
Unpacked immediately upon arrival, ventilate if not immediately planted. Ideal storage temperatures are 50-60 degrees Fahrenheit
Planting in Zones 8 and warmer (Fall Planting)
Choose a location with well-draining soil and that does not still puddle 5 or 6 hours after a hard rain. Adding organic matter of at least 2-3in will improve drainage. Plant bulbs 4-6in apart, 2-3in deep. Water after planting to encourage root development. Refrain from watering until leaves sprout (most likely will occur in spring).
Planting in Zones 7 and colder (Spring Planting)
Growing in Containers:
Fill a container with drainage holes with good-quality, well-draining potting mix. Leaving 3-4 inches between bulbs will allow plenty of room for growth. Plant about 2 inches deep. Water after planting. Once the danger of a hard frost has passed, place the container in a location that receives full sun all day.
Growing in Outdoor Landscape Beds:
About a month before last average frost, soak the bulbs 3-4 hours (but not more than 4 hours) in tepid water before planting outside in a well-drained location with full sun.
Growing in Greenhouses:
Follow instructions for container growing. Ideal greenhouse temperatures are 45-48 degrees Fahrenheit at night and 58-65 degrees Fahrenheit during the day. Temperatures above 70 degrees Fahrenheit should be avoided. Following soaking instructions for outdoor landscape beds will give ranunculus a head start on growth.
Watering/Fertilizer/Growing
Begin watering once plants begin to grow being careful not to allow the soil to become soggy. Fertilizing is not necessary. In warmer climates, wait until foliage dies back before completely removing it. In colder climates, ranunculus are annuals and bulbs will need to be replaced each year. On average, ranunculus begin to bloom 90 days after planting. Flowering typically lasts approximately 6 to 7 weeks for fall planted bulbs and 4 to 6 weeks for spring planted bulbs.
More Details
Storage After Arrival
Unpacked immediately upon arrival, ventilate if not immediately planted. Ideal storage temperatures are 50-60 degrees Fahrenheit
Planting in Zones 8 and warmer (Fall Planting)
Choose a location with well-draining soil and that does not still puddle 5 or 6 hours after a hard rain. Adding organic matter of at least 2-3in will improve drainage. Plant bulbs 4-6in apart, 2-3in deep. Water after planting to encourage root development. Refrain from watering until leaves sprout (most likely will occur in spring).
Planting in Zones 7 and colder (Spring Planting)
Growing in Containers:
Fill a container with drainage holes with good-quality, well-draining potting mix. Leaving 3-4 inches between bulbs will allow plenty of room for growth. Plant about 2 inches deep. Water after planting. Once the danger of a hard frost has passed, place the container in a location that receives full sun all day.
Growing in Outdoor Landscape Beds:
About a month before last average frost, soak the bulbs 3-4 hours (but not more than 4 hours) in tepid water before planting outside in a well-drained location with full sun.
Growing in Greenhouses:
Follow instructions for container growing. Ideal greenhouse temperatures are 45-48 degrees Fahrenheit at night and 58-65 degrees Fahrenheit during the day. Temperatures above 70 degrees Fahrenheit should be avoided. Following soaking instructions for outdoor landscape beds will give ranunculus a head start on growth.
Watering/Fertilizer/Growing
Begin watering once plants begin to grow being careful not to allow the soil to become soggy. Fertilizing is not necessary. In warmer climates, wait until foliage dies back before completely removing it. In colder climates, ranunculus are annuals and bulbs will need to be replaced each year. On average, ranunculus begin to bloom 90 days after planting. Flowering typically lasts approximately 6 to 7 weeks for fall planted bulbs and 4 to 6 weeks for spring planted bulbs.
More Details
Soil Preparation and Planting
Best grown in fertile, humusy, organically rich, medium to wet soils in part shade or filtered sun. In general, green types can take higher light levels; dark-leaved ones need shade. Once nighttime temperatures are consistently 50-60° F, plant each bulb 6-8" deep and 2-4 feet apart. Water generously.
Fertilization
Fertilize Colocasia every three weeks during fall and winter. Use a liquid plant food with a balanced N-P-K ratio such as 10-10-10 or 20-20-20, diluted to half the strength recommended on the label. Water the fertilizer deeply into the soil immediately after application.
Water
Elephant ears are high water plants. Water as needed to keep the soil consistently moist, and don't allow the soil to become dry. Colocasia likes wet soil and is even appropriate for planting next to a pond, or in water up to 6 inches deep. Check the soil often if the bulbs are planted in sunlight.
Fall Care and Storage
Dig Colocasia bulbs after the first frost in autumn if you live in a climate with cold winters. Cut the foliage down to 2 to 4 inches before cutting. Allow the bulbs to dry for a day, and then place the bulbs in a box of wood shavings or peat moss. Store the box where the temperatures don't drop below 45°F.
More Details
Soil Preparation and Planting
Best grown in fertile, humusy, organically rich, medium to wet soils in part shade or filtered sun. In general, green types can take higher light levels; dark-leaved ones need shade. Once nighttime temperatures are consistently 50-60° F, plant each bulb 6-8" deep and 2-4 feet apart. Water generously.
Fertilization
Fertilize Colocasia every three weeks during fall and winter. Use a liquid plant food with a balanced N-P-K ratio such as 10-10-10 or 20-20-20, diluted to half the strength recommended on the label. Water the fertilizer deeply into the soil immediately after application.
Water
Elephant ears are high water plants. Water as needed to keep the soil consistently moist, and don't allow the soil to become dry. Colocasia likes wet soil and is even appropriate for planting next to a pond, or in water up to 6 inches deep. Check the soil often if the bulbs are planted in sunlight.
Fall Care and Storage
Dig Colocasia bulbs after the first frost in autumn if you live in a climate with cold winters. Cut the foliage down to 2 to 4 inches before cutting. Allow the bulbs to dry for a day, and then place the bulbs in a box of wood shavings or peat moss. Store the box where the temperatures don't drop below 45°F.
More Details
Storage After Arrival Until Planting Time
Upon arrival, inspect the roots for any possible damage. Store the roots in the closed shipping container at 45-50° F up to 2-3 weeks.
Forcing Dahlia for Pot
Greenhouse Culture
The greenhouse requirements and general growth pattern of the Dahlia are quite similar to those of the Easter Lily. Dahlias begin to shoot
growth slowly and unevenly and will range from 1-2-3 or more shoots. DO NOT PERMIT MORE THAN 3 SHOOTS TO DEVELOP FROM THE CROWN.
Watering
After planting, water the medium thoroughly. Subsequently, for the initial 4-5 weeks keep the medium moist but not wet. After the shoots begin to
develop water should be applied directly to the medium. Avoid wetting the foliage whenever possible.Once the flowerbuds become visible, watering will
have to be more frequently and thoroughly. This is due to increased water requirements of the plant. On the date that A'Rest is to be applied as a
soil drench, the medium must be moist. Water the evening before and then apply the A'Rest the next morning.
Potting, Planting Medium, Spacing
Normally Dahlia are forced single in a 6" (15 cm) pot, either 3/4 or standard size pots can be used. Also either clay or plastic pots can be used but
plastic pots are preferred. Dahlia require a well drained, granulated medium. It should be sterile, have a pH of 6-7 and be low in soluble salts.
Because the application of A'Rest must be as a soil drench, the texture of the medium is critical. It should consist of equal parts of loamy soil,
a coarse aggregate, and peat. The organic matter should not be over 1/3 of mixture and the medium should not contain bark.
Light, Temperature & Ventilation in Greenhouse
Dahlia must be exposed to full sunlight throughout the greenhouse growing period. Dahlia should be forced at a minimum night temperature of 62-65° F.
Lower temperature will delay flowering. Day temperatures should be kept at 68-72° F. Higher temperatures if given for a prolonged period of time can
reduce the plant quality. To delay the development of the crop near the date of marketing, it is possible to lower the night temperature to 55° F,
conversely, the crop can be accelerated by forcing 70-75° F for a few days. Good ventilation is essential. Do not permit humidity to build up.
Fertilizer
Dahlia require continuous fertilization beginning immediately after shoot growth becomes visible. A complete (NPK) fertilizer is required. A slow release
(14-14-14) fertilizer applied as a top-dress can be used. Also a weekly application of 200 ppmN of a 20-20-20 soluble fertilizer
The liquid feed can be used as a supplement to the slow release fertilization if needed. can be used.
Use of Ancymidol (A'Rest)
The only plant growth regulator approved for use in controlling the tuberous-rooted dahlia is ancymidol (A'Rest). For primary height control the
ancymidol must be applied as a soil drench no later than two weeks after planting. More precisely, it should be applied when the shoots are
approximately 1/4" (0.5 cm) long. At the time of application the planting medium must be moist! See variety list for use of A'Rest.
Pinching
Each variety will produce a range of single, double or multiple shooted roots to develop the maximum flowers per pot at the time of marketing,
and to provide better shaped plants, it is necessary that all plants which are producing only a single strong shoots must be pinched. It appears that
the best stage of development to pinch out the terminal shoot is after the 3rd or 4th pair of leaves have unfolded. Dahlia normally form 2-4
pair of leaves. A pinch at this time will force 2-4 lateral breaks to produce more flowers.
Cultivated Stock
All roots must be from cultivated stock, especially grown for pot culture. Do not use regular, uncultivated stock.
For Cut
Planting, Medium, Watering & Fertilizer
Use a well drained soil pH 6-7 and a low soluble salt. Plant in full sun. Plant the crown slightly above the soil. Do not split roots prior to planting. Place
dahlias in rows 2 feet on center, while the rows should be 2-3 feet apart. Dahlias are a water loving plant. In dry conditions be sure to add water to
allow for proper growth. Continuous feeding is required, beginning at shoot emergence. Use a weekly application of 200 ppmN of a 20-20-20 or a topdress
application of a slow release 14-14-14 fertilizer. Cut when petals begin to loosen. Dahlias can be cut with or without foliage. Keep in cooler at 40-45° F.
Storage After Arrival Until Planting Time
Upon arrival, inspect the roots for any possible damage. Store the roots in the closed shipping container at 45-50° F up to 2-3 weeks.
Forcing Dahlia for Pot
Greenhouse Culture
The greenhouse requirements and general growth pattern of the Dahlia are quite similar to those of the Easter Lily. Dahlias begin to shoot
growth slowly and unevenly and will range from 1-2-3 or more shoots. DO NOT PERMIT MORE THAN 3 SHOOTS TO DEVELOP FROM THE CROWN.
Watering
After planting, water the medium thoroughly. Subsequently, for the initial 4-5 weeks keep the medium moist but not wet. After the shoots begin to
develop water should be applied directly to the medium. Avoid wetting the foliage whenever possible.Once the flowerbuds become visible, watering will
have to be more frequently and thoroughly. This is due to increased water requirements of the plant. On the date that A'Rest is to be applied as a
soil drench, the medium must be moist. Water the evening before and then apply the A'Rest the next morning.
Potting, Planting Medium, Spacing
Normally Dahlia are forced single in a 6" (15 cm) pot, either 3/4 or standard size pots can be used. Also either clay or plastic pots can be used but
plastic pots are preferred. Dahlia require a well drained, granulated medium. It should be sterile, have a pH of 6-7 and be low in soluble salts.
Because the application of A'Rest must be as a soil drench, the texture of the medium is critical. It should consist of equal parts of loamy soil,
a coarse aggregate, and peat. The organic matter should not be over 1/3 of mixture and the medium should not contain bark.
Light, Temperature & Ventilation in Greenhouse
Dahlia must be exposed to full sunlight throughout the greenhouse growing period. Dahlia should be forced at a minimum night temperature of 62-65° F.
Lower temperature will delay flowering. Day temperatures should be kept at 68-72° F. Higher temperatures if given for a prolonged period of time can
reduce the plant quality. To delay the development of the crop near the date of marketing, it is possible to lower the night temperature to 55° F,
conversely, the crop can be accelerated by forcing 70-75° F for a few days. Good ventilation is essential. Do not permit humidity to build up.
Fertilizer
Dahlia require continuous fertilization beginning immediately after shoot growth becomes visible. A complete (NPK) fertilizer is required. A slow release
(14-14-14) fertilizer applied as a top-dress can be used. Also a weekly application of 200 ppmN of a 20-20-20 soluble fertilizer
The liquid feed can be used as a supplement to the slow release fertilization if needed. can be used.
Use of Ancymidol (A'Rest)
The only plant growth regulator approved for use in controlling the tuberous-rooted dahlia is ancymidol (A'Rest). For primary height control the
ancymidol must be applied as a soil drench no later than two weeks after planting. More precisely, it should be applied when the shoots are
approximately 1/4" (0.5 cm) long. At the time of application the planting medium must be moist! See variety list for use of A'Rest.
Pinching
Each variety will produce a range of single, double or multiple shooted roots to develop the maximum flowers per pot at the time of marketing,
and to provide better shaped plants, it is necessary that all plants which are producing only a single strong shoots must be pinched. It appears that
the best stage of development to pinch out the terminal shoot is after the 3rd or 4th pair of leaves have unfolded. Dahlia normally form 2-4
pair of leaves. A pinch at this time will force 2-4 lateral breaks to produce more flowers.
Cultivated Stock
All roots must be from cultivated stock, especially grown for pot culture. Do not use regular, uncultivated stock.
For Cut
Planting, Medium, Watering & Fertilizer
Use a well drained soil pH 6-7 and a low soluble salt. Plant in full sun. Plant the crown slightly above the soil. Do not split roots prior to planting. Place
dahlias in rows 2 feet on center, while the rows should be 2-3 feet apart. Dahlias are a water loving plant. In dry conditions be sure to add water to
allow for proper growth. Continuous feeding is required, beginning at shoot emergence. Use a weekly application of 200 ppmN of a 20-20-20 or a topdress
application of a slow release 14-14-14 fertilizer. Cut when petals begin to loosen. Dahlias can be cut with or without foliage. Keep in cooler at 40-45° F.
