GROWER SUCCESS GUIDE | 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
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
PESTS
DISEASES
FINISH PGRS
VARIETY
VIGOR TIMING
Aphids, Spider Mites, Thrips, Leaf Miners
B-Nine ® WSG (2,500–3,500 ppm) are usually sufficient to control growth. A Bonzi ® drench (3–4 ppm) can also be applied to control growth or to hold plants for sale.
Grandalia ™ Burgundy 70076369 Grandalia ™ Dark Red 70052845 Grandalia ™ Dark Rose 70076370
M-V
E-M
Botrytis, Powdery Mildew, Basal Stem Rot
C-M M
M-V
M M
Grandalia ™ Fire 70069965
M
Grandalia ™ Lavender Ice 70076379 Grandalia ™ Magenta 70076371 Grandalia ™ Orange 70019193 Grandalia ™ Pink 70019196 Grandalia ™ Pink Ice 70069967 Grandalia ™ Red 70051544 Grandalia ™ Sunny Flame 70059454 Grandalia ™ Sunrise 70035980
M-V M-V
L
M M M M M
M
M-V M-V M-V
C-M E-M M E-M
Grandalia ™ White 70076384 Grandalia ™ Yellow 70019190
M-V
M
M M 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 (< 2 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
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
PESTS
DISEASES
FINISH PGRS
VARIETY
VIGOR TIMING
Aphid, Spider Mites, Thrips, Leaf Miners
B-Nine ® WSG (2500–3500 ppm) are usually sufficient to control growth. A Bonzi ® drench (2–4 ppm) can also be used to control growth or to hold plants for sale.
Happy Days ™ Cherry Red 70053908 Happy Days ™ Fuchsia Halo 70089149 Happy Days ™ Lemon 70053907
M
M
Botrytis, Powdery Mildew, Basal Stem Rot
M E-M
M
L
Happy Days ™ Neon 70082942
M E-M
Happy Days ™ Orange Red Bicolor 70053909
M M
M M
Happy Days ™ Pink 70037236
Happy Days ™ Purple Imp. 70089150 Happy Days ™ Scarlet 70082941 Happy Days ™ White 70037235 Happy Days ™ Yellow 70082954
M E-M M E-M M E-M
M M Tech Tips: Long-day lighting (daylength 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.
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