GROWER SUCCESS GUIDE | VEGETATIVE FINISHING
Impatiens SILHOUETTE ® Impatiens walleriana 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
72–74 °F (22–23 °C)
68–70 °F (20–21 °C)
200–250 ppm N Not Recommended 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, Thrips, Leafminers
Botrytis, Basal Stem Fungal Rot, Impatiens Necrotic Spot Virus (INSV)
Growth can be controlled using sprays of Bonzi ® (5–10 ppm). A Bonzi ® drench (0.5–1 ppm) can be also be used to control growth mid to late in the crop cycle or to hold plants before sale.
Silhouette ® Appleblossom 70003776 Silhouette ® Cherry 70003801 Silhouette ® Purple 70003779 Silhouette ® Red 70003778 Silhouette ® Red Star 70003780 Silhouette ® Rose 70003766 Silhouette ® Rose Star 70003777 Silhouette ® Salmon 70003802 Silhouette ® White 70003803
C-M E-M M E-M
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C-M E-M Tech Tips: Silhouette impatiens are fast rooters and will be ready to transplant from propagation relatively quickly. Some growers have success with direct-stick cuttings into large packs. Unrooted cuttings are sensitive to chilling, so avoid storing cuttings<48 °F (9 °C). Silhouette Impatiens generally do not need any pinching if cuttings are compact and well-branched. Florel ® can be used early but is usually not needed. Keys to success are to avoid water and heat stress when the plants mature. A Bonzi ® drench during mid-late season to keep growth under control. Scout for Thrips regularly and Thrips-vectored tospoViruses. Check media EC periodically to avoid high salt
Impatiens New Guinea SONIC ® Impatiens hawkeri 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
72–74 °F (22–23 °C)
68–70 °F (20–21 °C)
125–175 ppm N Not Recommended 1 qt. | 1 ppp | 6–7 weeks 1.25 qt. | 1 ppp | 8–9 weeks 2.5 qt. | 1–2 ppp | 9–10 weeks 3 qt. | 3 ppp | 9–10 weeks 1.5 gal. HB | 4 ppp | 10–11 weeks
PESTS
DISEASES
FINISH PGRS
VARIETY
VIGOR TIMING
Aphids, Thrips, Spider Mites, Broad Mites
Bonzi ® (1–2 ppm). Avoid late Bonzi ® sprays to prevent flower size reduction. Florel ® (300 ppm) can be used early on after transplant to delay flowering, but this should only be done for large baskets or pots where flower delay is desired.
Sonic ® Amethyst 70003738 Sonic ® Bright Pink 70019677 Sonic ® Deep Purple 70066412 Sonic ® Deep Red 70003800 Sonic ® Deep Salmon 70066413 Sonic ® Light Lavender 70003739 Sonic ® Light Pink 70003740 Sonic ® Magic Pink 70003785 Sonic ® Orange 70003742 Sonic ® Pink 70003743 Sonic ® Red 70008405 Sonic ® Salmon 70003744 Sonic ® Sweet Orange 70003805 Sonic ® Sweet Purple 70003806 Sonic ® Sweet Red 70061277 Sonic ® Lilac 70003741
C-M M C-M M
Botrytis, Myrothecium Fungal Leaf Spot (propagation), Impatiens Necrotic Spot Virus (INSV)
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M
C-M E-M
M-L
C-M E-M C-M M C-M M C-M L C-M M C-M E-M C-M M C-M M-L C E
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Sonic ® White 70066410 M E-M Tech Tips: Sonic New Guinea impatiens are relatively fast rooters. Some growers have success with direct-stick cuttings into large packs. Unrooted cuttings are sensitive to chilling, so avoid storing cuttings<48 °F (9 °C). Sonics generally do not need any pinching. The keys to success are to avoid water and heat stress when the plants mature. Scout for Thrips regularly and Thrips-vectored tospoViruses. Check media EC periodically to avoid high salt levels. Moderate light levels and warm temperatures provide the largest flower
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