VEGETATIVE FINISHING
Geranium Ivy IVY LEAGUE ™ Pelargonium peltatum MEDIA pH/EC LIGHT LEVEL
DAY LENGTH DAY TEMP NIGHT TEMP FERTILIZER
PINCHES
FINISHING PROGRAM
pH: 5.5–5.9 SME 2.3–2.8 mS/cm, PourThru EC: 3.5–4.2 mS/cm
4,000–6,000 foot candles (800–1,200 micro mols)
Day neutral
72–74 °F (22–23 °C)
68–70 °F (20–21 °C)
200–250 ppm N Not recommended 1 qt. | 1 ppp | 8–9 weeks
1.25 qt. | 1 ppp | 10–11 weeks 2.5 qt. | 1–2 ppp | 12–13 weeks 3 qt. | 3 ppp | 12–13 weeks 1.5 gal. HB | 3–4 ppp | 12–13 weeks 2 gal. HB | 4–5 ppp | 12–13 weeks
Tech Tips: Ivy League Ivy Geranium is relatively vigorous and will require regular plant growth regulator (PGR) applications, especially under warm growing conditions. Provide relatively high light levels and warm temperatures early on to establish the plant and to allow it to respond adequately to PGRs. Early Florel ® sprays are key to making well-branched, quality plants. Watch for Botrytis under tight spacing and in combination plantings, especially when overhead irrigating. Monitor the media and try to keep the pH between 5.5–5.9 to avoid iron deficiency (tip chlorosis). Geranium Zonal AMERICANA ® Pelargonium zonale MEDIA pH/EC LIGHT LEVEL DAY LENGTH DAY TEMP NIGHT TEMP FERTILIZER PINCHES FINISHING PROGRAM pH: 5.8–6.2 SME 2.3–2.8 mS/cm, PourThru EC: 3.5–4.2 mS/cm 4,000–6,000 foot candles (800–1,200 micro mols) Day neutral 72–74 °F (22–23 °C) 68–70 °F (20–21 °C) 200–250 ppm N Not recommended 1.25 qt. | 1 ppp | 9–10 weeks 2.5 qt. | 1 ppp | 11–12 weeks 3 qt. | 3 ppp | 11–12 weeks
1.5 gal. HB | 3–4 ppp | 11–12 weeks 1.5 gal. pot | 2 ppp | 11–12 weeks 2 gal. HB | 4–5 ppp | 11–12 weeks
Tech Tips: Americana Geraniums are moderately vigorous and usually require regular plant growth regulator (PGR) applications, especially under warm growing conditions. Provide relatively high light levels and warm temperatures early on to establish the plant and to allow it to respond adequately to PGRs. Early Florel ® sprays are crucial to making well-branched, quality plants. Watch for Botrytis under tight spacing and in combination plantings, especially when overhead irrigating. Geranium Zonal NOVELTY COLLECTION Pelargonium zonale MEDIA pH/EC LIGHT LEVEL DAY LENGTH DAY TEMP NIGHT TEMP FERTILIZER PINCHES FINISHING PROGRAM pH: 5.8–6.2 SME 2.3–2.8 mS/cm, PourThru EC: 3.5–4.2 mS/cm 4,000–6,000 foot candles (800–1,200 micro mols) Day neutral 72–74 °F (22–23 °C) 68–70 °F (20–21 °C) 200–250 ppm N Not recommended 1 qt. | 1 ppp | 7–8 weeks 1.25 qt. | 1 ppp | 9–12 weeks 2.5 qt. | 1 ppp | 9–12 weeks 1.5 gal. HB | 3 ppp | 11–12 weeks Tech Tips: These varieties have medium vigor and usually require regular plant growth regulator (PGR) applications, especially under warm growing conditions. Provide relatively high light levels and warm temperatures early on to establish the plant and to allow it to respond adequately to PGRs. Early Florel ® sprays are crucial to making well-branched, quality plants. Watch for Botrytis under tight spacing and in combination plantings, especially when overhead irrigating. Monitor the media and try to keep the pH at or above 6.0 to avoid iron/manganese toxicity. Geranium Zonal ROCKY MOUNTAIN ™ Pelargonium zonale MEDIA pH/EC LIGHT LEVEL DAY LENGTH DAY TEMP NIGHT TEMP FERTILIZER PINCHES FINISHING PROGRAM pH: 5.8–6.2 SME 2.3–2.8 mS/cm, PourThru EC: 3.5–4.2 mS/cm 4,000–6,000 foot candles (800–1,200 micro mols) Day neutral 72–74 °F (22–23 °C) 68–70 °F (20–21 °C) 200–250 ppm N Not recommended 2.5 qt. | 1 ppp | 11–12 weeks 3 qt. | 3 ppp | 11–12 weeks
1.5 gal. HB | 3–4 ppp | 11–12 weeks 2 gal. HB | 4–5 ppp | 11–12 weeks
Tech Tips: Rocky Mountain Zonal Geranium has a vigorous habit and usually require regular plant growth regulator (PGR) applications, especially under warm growing conditions. Provide relatively high light levels and warm temperatures early on to establish the plant and to allow it to respond adequately to PGRs. Early Florel ® sprays are key to making well-branched, quality plants. Watch for Botrytis under tight spacing and in combination plantings, especially when overhead irrigating.
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
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