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
Tech Tips: 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 Interspecific New Guinea SPECTRA ™ Impatiens interspecific 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 Large Packs | 1 ppp | 4–5 weeks 1 pt. | 1 ppp | 5–6 weeks 1 qt. | 1 ppp | 6–7 weeks
1.25 qt. | 1 ppp | 7–9 weeks 2.5 qt. | 1 ppp | 7–9 weeks 3 qt. | 2–3 ppp | 8–9 weeks
1.5 gal. HB | 3 ppp | 9–10 weeks 1.5 gal. pot | 2–3 ppp | 8–9 weeks 2 gal. HB | 4 ppp | 9–10 weeks Tech Tips: 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. 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
Tech Tips: 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.
G R O W E R S U C C E S S G U I D E 2 0 2 1 – 2 0 2 2 | A N N U A L S
84
Made with FlippingBook Learn more on our blog