GROWER SUCCESS GUIDE | VEGETATIVE FINISHING
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
Facultative Short Day
64–66 °F (18–19 °C)
66–68 °F (19–20 °C)
200–250 ppm N 1 Pinch
1 qt. | 1 ppp | 7–8 weeks 1 pt. | 1 ppp | 7 weeks
1.25 qt. | 1 ppp | 8–9 weeks 2.5 qt. | 1 ppp | 9–10 weeks 3 qt. | 2 ppp | 9–10 weeks 1.5 gal. pot | 3 ppp | 9–10 weeks
PESTS
DISEASES
FINISH PGRS
VARIETY
VIGOR TIMING
Aphid, Spider Mites, Thrips, Leaf Miners
Botrytis, Powdery Mildew, Basal Stem Rot
B-Nine ® WSG at 2500 ppm are recommended at 4 weeks and 6 weeks after transplant to help control growth. Sprays of Florel ® at 250 ppm at 4 weeks and 5.5–6 weeks after transplant will also help to control growth and can be used instead of the B-Nine ® WSG sprays. The Florel ® sprays will also help prevent late-season flower peduncle stretch. A Bonzi ® drench at 2–4 ppm can be used to hold plants for sale.
Sincerity 70082930
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Tech Tips: Long-day lighting (daylength 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 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
Day Neutral
70–72 °F (21–22 °C)
62–64 °F (17–18 °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 | 4 ppp | 10–11 weeks
PESTS
DISEASES
FINISH PGRS
VARIETY
VIGOR TIMING
Aphids, Whiteflies
Botrytis, Fungal Root Rot
B-Nine ® WSG (2,500 ppm), Bonzi ® (5 ppm), or Sumagic ® (3 ppm) can be applied to control growth.
Darla ® Deep Salmon 70006747 Darla ® Light Pink 70003545
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Darla ® Orange 70060774 Darla ® Red 70066232 Darla ® Rose 70003547 Darla ® White 70071557
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M E Tech Tips: Avoid dehydration of the cuttings before sticking in propagation. Darla is best when grown cool with high light. No 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
Day Neutral
76–78 °F (24–26 °C)
70–72 °F (21–22 °C)
200–250 ppm N 1 Pinch
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 1.5 gal. HB | 4 ppp | 12–13 weeks
PESTS
DISEASES
FINISH PGRS
VARIETY
VIGOR TIMING
Aphids, Whiteflies, Thrips,
Cercospora and Corynespora Fungal Leaf Spot, Fungal Root and Basal Stem Rot
B-Nine ® WSG (3,500–5,000 ppm) can be used. Sprays of Configure ® (300 ppm) or Atrimmec ® (200–400) early on can be used to improve branching. Bonzi ® drenches (0.5–2 ppm) can also be done to control growth and reduce leaf size, especially under very hot growing conditions. Madinia White is the most vigorous variety in the line and generally will need some PGR applied to control its growth
Madinia ® Coral Pink 70050968 Madinia ® Deep Red 70003886 Madinia ® Pink 70003888 Madinia ® White 70003889
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Mealybugs, Spider Mites
Tech Tips: Madinia dipladenia are very slow rooters. Provide ample heat and rooting times during propagation. Plants are also chilling sensitive so avoid storing cuttings<48 °F (9 °C). Madinia 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.
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