VEGETATIVE FINISHING
Dahlia GRANDALIA ™ Dahlia hybrida MEDIA pH/EC LIGHT LEVEL
DAY LENGTH DAY TEMP NIGHT TEMP FERTILIZER
PINCHES
FINISHING PROGRAM
pH: 5.8–6.2 SME 1.5–2.1 mS/cm, PourThru EC: 2.3–3.2 mS/cm
4,000–6,000 foot candles (800–1,200 micro mols)
Facultative short day
70–72 °F (21–22 °C)
66–68 °F (19–20 °C)
200–250 ppm N 1 pinch
1 qt. | 1 ppp | 6–7 weeks 1.25 qt. | 1 ppp | 8–9 weeks 2.5 qt. | 1 ppp | 9–10 weeks 3 qt. | 2–3 ppp | 9–10 weeks 1.5 gal. HB | 3 ppp | 10–11 weeks 2 gal. HB | 4 ppp | 10–11 weeks
Tech Tips: Long-day lighting (day length extension or night interruption) is needed during propagation to avoid premature flowering and tuber formation. Ideal photoperiod during finishing to provide the correct balance between vegetative growth and flower formation is between 13–14 hours. Growing under very short natural days (12 hours) will result in short plants, fast flowering, and root tubers. Provide warm temperatures early on in finishing to allow plants to establish after transplant. Plant the rooting cutting relatively deep to provide good support and balance in the pot for the maturing plants. Scout and treat for a range of insects and diseases, including spider mites, thrips, and powdery mildew. Dahlia HAPPY DAYS ™ Dahlia hybrida MEDIA pH/EC LIGHT LEVEL DAY LENGTH DAY TEMP NIGHT TEMP FERTILIZER PINCHES FINISHING PROGRAM pH: 5.8–6.2 SME 1.5–2.1 mS/cm, PourThru EC: 2.3–3.2 mS/cm 4,000–6,000 foot candles (800–1,200 micro mols) Facultative short day 70–72 °F (21–22 °C) 66–68 °F (19–20 °C) 200–250 ppm N 1 pinch
1 qt. | 1 ppp | 7–8 weeks 1.25 qt. | 1 ppp | 8–9 weeks 2.5 qt. | 1 ppp | 9–10 weeks 3 qt. | 2–3 ppp | 9–10 weeks 1.5 gal. pot | 3 ppp | 10–11 weeks
Tech Tips: Long-day lighting (day length extension or night interruption) is needed during propagation to avoid premature flowering and tuber formation. Ideal photoperiod during finishing to provide the correct balance between vegetative growth and flower formation is between 13–14 hours. Growing under very short natural days (< 12 hours) will result in short plants, fast flowering, and root tubers. Provide warm temperatures early on in finishing to allow plants to establish after transplant. Plant the rooting cutting relatively deep to provide good support and balance in the pot for the maturing plants. Scout and treat for a range of insects and diseases, including Spider mites, Thrips, and Powdery mildew. Dahlia SINCERITY Dahlia hybrida MEDIA pH/EC LIGHT LEVEL DAY LENGTH DAY TEMP NIGHT TEMP FERTILIZER PINCHES FINISHING PROGRAM pH: 5.8–6.2 SME 1.5–2.1 mS/cm, PourThru EC: 2.3–3.2 mS/cm 4,000–6,000 foot candles (800–1,200 micro mols) Facultative short day 66–68 °F (18–19 °C) 64–66 °F (18–19 °C) 200–250 ppm N Not recommended 2.5 qt. | 1 ppp | 9–10 weeks 3 qt. | 2 ppp | 9–10 weeks 1.5 gal. pot | 3 ppp | 9–10 weeks Tech Tips: Long-day lighting (day length extension or night interruption) is needed during propagation to avoid premature flowering and tuber formation. The ideal photoperiod during finishing to provide the correct balance between vegetative growth and flower formation is between 13–14 hours. Growing under very short natural days (< 12 hours) will result in short plants, fast flowering, and root tubers. Provide warm temperatures early on in finishing to allow plants to establish after transplant. Sincerity Dahlia grows best under moderately warm temperatures. Avoid extreme heat stress, especially under relatively high light intensities. Plant the rooting cutting relatively deep to provide good support and balance in the pot for the maturing plants. Scout and treat for a range of insects and diseases, including Spider mites, Thrips, and Powdery mildew. Diascia DARLA ® Diascia barberae MEDIA pH/EC LIGHT LEVEL DAY LENGTH DAY TEMP NIGHT TEMP FERTILIZER PINCHES FINISHING PROGRAM pH: 5.8–6.2 SME 1.5–2.1 mS/cm, PourThru EC: 2.3–3.2 mS/cm 4,000–6,000 foot candles (800–1,200 micro mols) Day neutral 70–72 °F (21–22 °C) 62–64 °F (17–18 °C) 200–250 ppm N 1 pinch 1.5 gal. HB | 4 ppp | 10–11 weeks 2 gal. HB | 5 ppp | 10–11 weeks Tech Tips: Avoid dehydration of the cuttings before sticking in propagation. Darla Diascia is best when grown cool with high light. No plant growth regulator (PGR) is typically needed when plants are grown cool. One pinch is all that is needed for this crop. Florel ® can be used early but will severely delay flowering if sprayed too late in the crop cycle. Watch for Botrytis in the crown of plants when overhead watering. Dipladenia MADINIA ® Mandevilla hybrida MEDIA pH/EC LIGHT LEVEL DAY LENGTH DAY TEMP NIGHT TEMP FERTILIZER PINCHES FINISHING PROGRAM pH: 5.8–6.2 SME 1.5–2.1 mS/cm, PourThru EC: 2.3–3.2 mS/cm 4,000–6,000 foot candles (800–1,200 micro mols) Facultative long day 76–78 °F (24–26 °C) 70–72 °F (21–22 °C) 200–250 ppm N 1 pinch 1.5 gal. HB | 4 ppp | 12–13 weeks 2 gal. HB | 5 ppp | 12–13 weeks Tech Tips: Madinia Dipladenia has a controlled growth habit and bred for improved branching. They make very nice quart products. An early pinch (either in propagation or shortly after transplant) will encourage branching. High light and warm temperatures will improve quality and help reduce crop times. Higher light intensities and longer photoperiods help reduce the natural vining of the plants. 1 pt. | 1 ppp | 6 weeks 1 qt. | 1 ppp | 6–7 weeks 1.25 qt. | 1 ppp | 8–9 weeks 2.5 qt. | 1 ppp | 9–10 weeks 3 qt. | 2–3 ppp | 9–10 weeks 1 qt. | 1 ppp | 8–9 weeks 1.25 qt. | 1 ppp | 10–11 weeks 2.5 qt. | 2 ppp | 12–13 weeks 3 qt. | 3 ppp | 12–13 weeks
G R O W E R S U C C E S S G U I D E 2 0 2 2 – 2 0 2 3 | A N N U A L S
74
Made with FlippingBook Learn more on our blog