GROWER SUCCESS GUIDE | SEED PROPAGATION
Impatiens ACCENT ™ PREMIUM F1 Impatiens walleriana REC TRAY FORMS PLUG TIME
SEEDS/CELL SEED COVER GERM TIME
SOIL TEMP
GERM LIGHT
MEDIA pH/EC
288–cell tray pH: 5.8–6.2 SME 0.5–0.75 mS/cm Comments: Use a calcium based fertilizer and feed once a week at most to avoid soft growth and stretching of plugs. Do not let plants go into the night with wet foliage or tip abortion may occur. Downward cupping or twisting of immature leaves may be caused by overuse of PGRs. Subdue Maxx ® and/or Segway ® drenches are recommended plug stage fungicides for disease management. Raw 4–5 weeks 1 Yes 3–5 days 72–75 °F (22–24 °C) Required for germination
Impatiens ATHENA ™ F1 Impatiens walleriana REC TRAY FORMS PLUG TIME
SEEDS/CELL SEED COVER GERM TIME
SOIL TEMP
GERM LIGHT
MEDIA pH/EC
288–cell tray pH: 5.8–6.2 SME 0.5–0.75 mS/cm Comments: Use a calcium-based fertilizer and feed once a week at most to avoid soft growth and stretching of plugs. Do not let plants go into the night with wet foliage or tip abortion may occur. Downward cupping or twisting of immature leaves may be caused by overuse of PGRs. Subdue Maxx ® and/or Segway ® drenches are recommended plug stage fungicides for disease management. Raw 4–5 weeks 1 Yes 3–5 days 72–75 °F (22–24 °C) Required for germination
Impatiens IMARA ™ XDR F1 Impatiens walleriana REC TRAY FORMS PLUG TIME
SEEDS/CELL SEED COVER GERM TIME
SOIL TEMP
GERM LIGHT
MEDIA pH/EC
288–cell tray
Raw
4–5 weeks
1
Yes
3–5 days
72–75 °F (22–24 °C)
Required for germination
pH: 5.8–6.2 SME 0.5–0.75 mS/cm
Comments: Use a calcium based fertilizer and feed once a week at most to avoid soft growth and stretching of plugs. Do not let plants go into the night with wet foliage or tip abortion may occur. Downward cupping or twisting of immature leaves may be caused by overuse of PGRs. Subdue Maxx ® and/or Segway ® drenches are recommended plug stage fungicides for disease management, and rotations of Mural ® and Micora ® sprays and Segovis ® sprays or drenches are recommended for the finishing stage.
Impatiens XTREME ™ F1 Impatiens walleriana REC TRAY FORMS PLUG TIME
SEEDS/CELL SEED COVER GERM TIME
SOIL TEMP
GERM LIGHT
MEDIA pH/EC
288–cell tray pH: 5.8–6.2 SME 0.5–0.75 mS/cm Comments: Use a calcium based fertilizer and feed once a week at most to avoid soft growth and stretching of plugs. Do not let plants go into the night with wet foliage or tip abortion may occur. Downward cupping or twisting of immature leaves may be caused by overuse of PGRs. Subdue Maxx ® and/or Segway ® drenches are recommended plug stage fungicides for disease management. Raw 4–5 weeks 1 Yes 3–5 days 72–75 °F (22–24 °C) Required for germination
Impatiens New Guinea FLORIFIC ® F1 Impatiens hawkeri REC TRAY FORMS PLUG TIME
SEEDS/CELL SEED COVER GERM TIME
SOIL TEMP
GERM LIGHT
MEDIA pH/EC
288–cell tray
Raw
4–6 weeks
1
Yes
8 days
70–75 °F (22–24 °C)
Not required for germination pH: 5.8–6.2
SME 0.9–1.3 mS/cm
Comments: Ensure a good scouting program for Thrips is in place.
Laurentia STARSHINE ™ F1 Laurentia axillaris REC TRAY FORMS PLUG TIME
SEEDS/CELL SEED COVER GERM TIME
SOIL TEMP
GERM LIGHT
MEDIA pH/EC
288–cell tray
Raw
7–10 weeks
1
No
10–14 days
65–68 °F (18–20 °C)
Not required for germination pH: 5.5–5.9
SME 0.9–1.3 mS/cm
Comments: Cool days with high light will reduce the need to apply PGRs.
Lavatera NOVELLA ™ F1 Lavatera trimestris REC TRAY FORMS PLUG TIME
SEEDS/CELL SEED COVER GERM TIME
SOIL TEMP
GERM LIGHT
MEDIA pH/EC
200–cell tray
Raw
4–5 weeks
1
Yes
5–7 days
68–72 °F (20–22 °C)
Not required for germination pH: 5.5–5.9
SME 0.5–0.75 mS/cm
Comments: The early PGR sprench during stage 1 of plug growth is critical so that plants are not floppy at retail. Transplant plugs on time; do not let them get root bound.
Marigold African ANTIGUA ™ F1 Tagetes erecta REC TRAY FORMS PLUG TIME
SEEDS/CELL SEED COVER GERM TIME
SOIL TEMP
GERM LIGHT
MEDIA pH/EC
288–cell tray
Detailed, SatinCoat ™
4–5 weeks
1
Yes
3–5 days
72–75 °F (22–24 °C)
Not required for germination pH: 6.1–6.5
SME 0.5–0.75 mS/cm
Comments: Easy to germinate on the bench. Maintain media pH above 6.2 to avoid iron/manganese toxicity. Short days will shorten time to flower.
Marigold African BIG TOP ™ F1 Tagetes erecta REC TRAY FORMS PLUG TIME
SEEDS/CELL SEED COVER GERM TIME
SOIL TEMP
GERM LIGHT
MEDIA pH/EC
288–cell tray
Coated, Detailed
4–5 weeks
1
Yes
3–5 days
72–75 °F (22–24 °C)
Not required for germination pH: 6.1–6.5
SME 0.5–0.75 mS/cm
Comments: Easy to germinate on the bench. Maintain media pH above 6.2 to avoid iron/manganese toxicity. Short days reduces time to flower.
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