GROWER SUCCESS GUIDE | SEED FINISHING
Petunia Grandiflora FROST ™ F1 Petunia grandiflora MEDIA pH/EC LIGHT LEVEL
DAY LENGTH DAY TEMP NIGHT TEMP FERTILIZER FINISHING PROGRAM
PESTS
DISEASES
pH: 5.5–5.9 SME 1.5–2.1 mS/cm, PourThru EC: 2.3–3.2 mS/cm
4,000–6,000 foot candles Facultative Long Day
68–70 °F (20–21 °C)
58–60 °F (14–16 °C)
125–175 ppm N Packs | 1 ppp | 4–5 weeks
Thrips, Aphids
Botrytis, Rhizoctonia
Large Packs | 1 ppp | 5–6 weeks 1 pt. | 1 ppp | 5–6 weeks 1 qt. | 1 ppp | 5–6 weeks 1.25 qt. | 2–3 ppp | 6–7 weeks 2.5 qt. | 3 ppp | 6–7 weeks 3 qt. | 3–4 ppp | 7–8 weeks 1.5 gal. HB | 3–4 ppp | 7–8 weeks 1.5 gal. pot | 3–4 ppp | 7–8 weeks
FINISH PGRs
TECH TIPS
Covering seed is not necessary but a light vermiculite coating will help maintain moisture levels in drier climates. Keep pelleted seed at moisture level 5 the first several days to help dissolve the pellet. Providing long days in the plug stage will reduce overall time to flower. Low boron levels can induce tip abortion. Spraying an uneven plug tray with B-Nine ® WSG at 1,500 ppm may help even the growth in the tray.
It is best to be proactive in applying PGRs on Petunias. Anticipate changes in weather or other conditions that can cause plant stretch and apply PGRs before plant stretch begins. Petunias respond well to B-Nine ® WSG sprays at 2,500–3,500 ppm. Do not apply B-Nine ® WSG after bud formation or flowers may reduce in size and/or become distorted. Bonzi ® drenches at 1–2 ppm during later stages in the crop will reduce stretch and will not affect flowering as much as B-Nine ® WSG.
Petunia Grandiflora TRITUNIA ™ F1 Petunia grandiflora MEDIA pH/EC LIGHT LEVEL
DAY LENGTH DAY TEMP NIGHT TEMP FERTILIZER FINISHING PROGRAM
PESTS
DISEASES
pH: 5.5–5.9 SME 1.5–2.1 mS/cm, PourThru EC: 2.3–3.2 mS/cm
4,000–6,000 foot candles Facultative Long Day
68–70 °F (20–21 °C)
58–60 °F (14–16 °C)
125–175 ppm N Packs | 1 ppp | 4–5 weeks
Thrips, Aphids
Botrytis, Rhizoctonia
Large Packs | 1 ppp | 4–5 weeks 1 pt. | 1 ppp | 5–6 weeks 1 qt. | 1 ppp | 5–6 weeks 1.25 qt. | 2–3 ppp | 6–7 weeks 2.5 qt. | 3 ppp | 6–7 weeks 3 qt. | 3–4 ppp | 7–8 weeks 1.5 gal. HB | 3–4 ppp | 7–8 weeks 1.5 gal. pot | 3–4 ppp | 7–8 weeks
FINISH PGRs
TECH TIPS
Covering seed is not necessary but a light vermiculite coating will help maintain moisture levels in drier climates. Keep pelleted seed at moisture level 5 the first several days to help dissolve the pellet. Providing long days in the plug stage will reduce overall time to flower. Low boron levels can induce tip abortion. Spraying an uneven plug tray with B-Nine ® WSG at 1,500 ppm may help even the growth in the tray.
It is best to be proactive in applying PGRs on Petunias. Anticipate changes in weather or other conditions that can cause plant stretch and apply PGRs before plant stretch begins. Petunias respond well to B-Nine ® WSG sprays at 2,500–3,500 ppm. Do not apply B-Nine ® WSG after bud formation or flowers may reduce in size and/or become distorted. Bonzi ® drenches at 1–2 ppm during later stages in the crop will reduce stretch and will not affect flowering as much as B-Nine ® WSG.
Petunia Milliflora PICOBELLA ™ F1 Petunia milliflora MEDIA pH/EC LIGHT LEVEL
DAY LENGTH DAY TEMP NIGHT TEMP FERTILIZER FINISHING PROGRAM
PESTS
DISEASES
pH: 5.5–5.9 SME 1.5–2.1 mS/cm, PourThru EC: 2.3–3.2 mS/cm
4,000–6,000 foot candles Facultative Long Day
68–70 °F (20–21 °C)
58–60 °F (14–16 °C)
125–175 ppm N Packs | 1 ppp | 4–5 weeks
Thrips, Aphids
Botrytis, Rhizoctonia
Large Packs | 1 ppp | 5–6 weeks 1 qt. | 1 ppp | 5–6 weeks
FINISH PGRs
TECH TIPS
Picobella is a genetically compact Petunia so usually does not need any PGR applications. If grown too warm or under low light conditions a spray of B-Nine ® WSG at 1,500–2,500 ppm will help keep the growth more compact. Do not spray with B-Nine ® WSG after bud formation; Picobellas is a milliflora Petunia so has many small flowers and late PGR applications may reduce flower size unacceptably.
Covering seed is not necessary but a light vermiculite coating will help maintain moisture levels in drier climates. Keep pelleted seed at moisture level 5 the first several days to help dissolve the pellet. Providing long days in the plug stage will reduce overall time to flower. Low boron levels can induce tip abortion.
Petunia Multiflora DAMASK ™ F1 Petunia multiflora MEDIA pH/EC LIGHT LEVEL
DAY LENGTH DAY TEMP NIGHT TEMP FERTILIZER FINISHING PROGRAM
PESTS
DISEASES
pH: 5.5–5.9 SME 1.5–2.1 mS/cm, PourThru EC: 2.3–3.2 mS/cm
4,000–6,000 foot candles Facultative Long Day
68–70 °F (20–21 °C)
58–60 °F (14–16 °C)
125–175 ppm N Packs | 1 ppp | 4–5 weeks
Thrips, Aphids
Botrytis, Rhizoctonia
Large Packs | 1 ppp | 5–6 weeks 1 pt. | 1 ppp | 5–6 weeks 1 qt. | 1 ppp | 5–6 weeks 1.25 qt. | 2–3 ppp | 6–7 weeks 2.5 qt. | 3 ppp | 6–7 weeks 1.5 gal. HB | 3–4 ppp | 7–8 weeks
FINISH PGRs
TECH TIPS
Damask is a genetically compact Petunia so requires significantly less PGRs than standard Petunias. It is best to control growth by providing optimal growing conditions. Suboptimal growing conditons (too warm, too humid, overwatering, low light) can promote soft, stretchy growth. If growth control is necessary, Damask responds well to sprays of B-Nine ® WSG at 2,500–3,500 ppm or Bonzi ® at 5–15 ppm.Bonzi ® drenches are not recommended.
Covering seed is not necessary but a light vermiculite coating will help maintain moisture levels in drier climates. Keep pelleted seed at moisture level 5 the first several days to help dissolve the pellet. Providing long days in the plug stage will reduce overall time to flower. Low boron levels can induce tip abortion. Spraying an uneven plug tray with B-Nine ® WSG at 1,500 ppm may help even the growth in the tray.
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