ANNUALS | SEED PROPAGATION
Dahlia hybrida OP Dahlia FRESCO ™ / HARLEQUIN ™ REC TRAY FORMS PLUG TIME
SEEDS/CELL SEED COVER GERM TIME
SOIL TEMP
GERM LIGHT
MEDIA pH/EC
288-cell tray
Raw, Coated
3–4 weeks
1
Yes
5 days
70 °F (21 °C)
Not required for germination pH: 5.5–5.9
SME 0.5–0.75 mS/cm
Comments: Provide day extension lighting to 12–14 hours/day to help prevent premature flower bud set.
Dianthus × barbatus F1 Dianthus DIABUNDA ® REC TRAY FORMS PLUG TIME
SEEDS/CELL SEED COVER GERM TIME
SOIL TEMP
GERM LIGHT
MEDIA pH/EC
288-cell tray
Pelleted
5–6 weeks
1
Yes
5 days
72–74 °F (22–23 °C)
Not required for germination pH: 5.5–5.9
SME 0.9–1.3 mS/cm Comments: Providing high light and dropping the temperature to an average daily temperature (ADT) of 60 °F (15.5 °C) will reduce the need for plant growth regulators (PGRs). Day extension lighting to 14 hours will hasten flowering of the finished plant.
Dianthus chinensis F1 Dianthus SUPER PARFAIT ™ / VENTI PARFAIT ™ REC TRAY FORMS PLUG TIME
SEEDS/CELL SEED COVER GERM TIME
SOIL TEMP
GERM LIGHT
MEDIA pH/EC
288-cell tray
Raw, Pelleted
5–6 weeks
1
Yes
5 days
72–74 °F (22–23 °C)
Not required for germination pH: 5.5–5.9
SME 0.9–1.3 mS/cm Comments: Providing high light and dropping the temperature to an average daily temperature (ADT) of 60 °F (15 °C) will reduce the need for plant growth regulators (PGRs). Day extension lighting to 14 hours will hasten flowering of the finished plant.
Gazania rigens F1 Gazania BIG KISS ™ / FROSTY KISS ™ / GAZOO ™ / KISS ™ REC TRAY FORMS PLUG TIME SEEDS/CELL SEED COVER GERM TIME
SOIL TEMP
GERM LIGHT
MEDIA pH/EC
288-cell tray
Raw
5–6 weeks
1
Yes
4–6 days
70–75 °F (21–24 °C)
Not required for germination pH: 5.5–5.9
SME 0.5–0.75 mS/cm
Comments: Growing Gazania plugs on the dry side and keeping them moderately cool will help prevent leaf stretch.
Gerbera jamesonii F1 Gerbera BENGAL ™ / CARTWHEEL ® / ELEPHANT ™ / JAGUAR ™ REC TRAY FORMS PLUG TIME SEEDS/CELL SEED COVER GERM TIME SOIL TEMP
GERM LIGHT
MEDIA pH/EC
128-cell tray pH: 5.5–5.9 SME 0.5–0.75 mS/cm Comments: Under low light conditions provide supplemental HID light if possible; do not extend day length as this will extend the time to flower. It is critical to allow adequate dry back between irrigations to prevent stunted and distorted growth. Because of this do not mist at night. If germinating on a bench it is best to use a tent system to increase humidity and reduce the frequency of irrigations/misting. SatinCoat ™ 5–6 weeks 1 No 4 days 74–76 °F (23–24 °C) Required for germination
Helianthus annuus Sunflower SUNFINITY ® REC TRAY FORMS PLUG TIME
SEEDS/CELL SEED COVER GERM TIME
SOIL TEMP
GERM LIGHT
MEDIA pH/EC
72-cell
Raw
4 weeks
1
Yes
5–6 days
68–72 °F (20–22 °C)
Not required for germination pH: 5.5–5.8
SME 1.0–1.5 mS/cm Comments: Apply a Bonzi ® (paclobutrazol) sprench at 2–3 ppm within 48 hours of sowing (3–5 quarts per 100 sq ft.) to control hypocotyl stretch. Plugs must be propagated under long day (+13 hour) photoperiods in order to prevent delays in flowering. During warmer periods of plug production, a B-Nine spray at 1,250–2,500 ppm can be applied 3 weeks after sowing to maintain internode control. This can be done only when the first Bonzi media sprench has not managed growth based on expectations. For more information on Sunfinity ® visit us at www.syngentaflowers-us.com/sunfinity.
Hibiscus moscheutos F1 Hibiscus HONEYMOON ™ REC TRAY FORMS PLUG TIME
SEEDS/CELL SEED COVER GERM TIME
SOIL TEMP
GERM LIGHT
MEDIA pH/EC
200-cell tray
Raw
3–4 weeks
1
Yes
3–5 days
75–81 °F (24–27 °C)
Not required for germination pH: 5.5–5.9
SME 0.5–0.75 mS/cm
Comments: If Altercel ™ is applied, seedlings may temporarily yellow. Begin feeding at 75 ppm N at radical emergence.
Impatiens hawkeri F1 Impatiens New Guinea FLORIFIC ® 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 (21–24 °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.
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