SEED PROPAGATION
Sunflower SUNFINITY ® F1 Helianthus hybrida 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. For more information on Sunfinity ® visit us at www.syngentaflowers-us.com/sunfinity.
Torenia HI-LITE ™ F1 Torenia fournieri REC TRAY FORMS
PLUG TIME
SEEDS/CELL SEED COVER GERM TIME
SOIL TEMP
GERM LIGHT
MEDIA pH/EC
288-cell tray
Pelleted
4–5 weeks
1
No
4–6 days
75 °F (24 °C)
Required for germination
pH: 5.5–5.9 SME 0.5–0.75 mS/cm
Comments: High light levels can cause leaf scorch. Very wet conditions will promote damping-off diseases.
Verbena OBSESSION ™ OP Verbena hybrida REC TRAY FORMS PLUG TIME
SEEDS/CELL SEED COVER GERM TIME
SOIL TEMP
GERM LIGHT
MEDIA pH/EC
288-cell tray
Raw, Primed
6–7 weeks
1
Yes
4–7 days
73–76 °F (23–24 °C)
Not required for germination pH: 5.5–5.9
SME 0.5–0.75 mS/cm Comments: Verbena need to be germinated on the dry side at moisture level 3. It is best to water in plug trays to moisture level 3 prior to sow, sow the seeds and then irrigate lightly only when needed to maintain moisture level 3.
Verbena OBSESSION ™ CASCADE OP Verbena hybrida REC TRAY FORMS PLUG TIME
SEEDS/CELL SEED COVER GERM TIME
SOIL TEMP
GERM LIGHT
MEDIA pH/EC
288-cell tray
Raw, Primed
6–7 weeks
1
Yes
4–7 days
73–76 °F (23–24 °C)
Not required for germination pH: 5.5–5.9
SME 0.5–0.75 mS/cm Comments: Verbena needs to be germinated on the dry side at moisture level 3. It is best to water in plug trays to moisture level 3 prior to sow, sow the seeds and then irrigate lightly only when needed to maintain moisture level 3.
Verbena TUSCANY ® OP Verbena hybrida REC TRAY FORMS
PLUG TIME
SEEDS/CELL SEED COVER GERM TIME
SOIL TEMP
GERM LIGHT
MEDIA pH/EC
288-cell tray
Raw, Primed
6–7 weeks
1
Yes
4–7 days
73–76 °F (23–24 °C)
Not required for germination pH: 5.5–5.9
SME 0.5–0.75 mS/cm Comments: Verbena needs to be germinated on the dry side at moisture level 3. It is best to water in plug trays to moisture level 3 prior to sow, sow the seeds and then irrigate lightly only when needed to maintain moisture level 3.
Vinca BLOCKBUSTER ™ F1 Catharanthus roseus REC TRAY FORMS PLUG TIME
SEEDS/CELL SEED COVER GERM TIME
SOIL TEMP
GERM LIGHT
MEDIA pH/EC
288-cell tray
Raw
5 weeks
1
Yes
7–8 days
75–78 °F (24–25 °C)
Not required for germination pH: 5.5–5.9
SME 0.9–1.3 mS/cm
Comments: Soil temperatures lower than 75 °F (23 °C) during germination may decrease germination rates. Keeping media pH at 5.8 or lower will help reduce the likelihood of Thielaviopsis infections.
Vinca CORA ® CASCADE XDR F1 Catharanthus roseus REC TRAY FORMS PLUG TIME
SEEDS/CELL SEED COVER GERM TIME
SOIL TEMP
GERM LIGHT
MEDIA pH/EC
288-cell tray
Raw
5 weeks
1
Yes
7–8 days
76–78 °F (24–25 °C)
Not required for germination pH: 5.5–5.9
SME 0.9–1.3 mS/cm
Comments: Soil temperatures lower than 75 °F (23 °C) during germination may decrease germination rates. Keeping media pH at 5.8 or lower will help reduce the likelihood of Thielaviopsis infections.
Vinca CORA ® CLASSIC F1 Catharanthus roseus REC TRAY FORMS PLUG TIME
SEEDS/CELL SEED COVER GERM TIME
SOIL TEMP
GERM LIGHT
MEDIA pH/EC
288-cell tray
Raw
5 weeks
1
Yes
7–8 days
76–78 °F (24–25 °C)
Not required for germination pH: 5.5–5.9
SME 0.9–1.3 mS/cm
Comments: Soil temperatures lower than 75 °F (23 °C) during germination may decrease germination rates. Keeping media pH at 5.8 or lower will help reduce the likelihood of Thielaviopsis infections.
Vinca CORA ® XDR F1 Catharanthus roseus REC TRAY FORMS PLUG TIME
SEEDS/CELL SEED COVER GERM TIME
SOIL TEMP
GERM LIGHT
MEDIA pH/EC
288-cell tray
Raw
5 weeks
1
Yes
7–8 days
76–78 °F (24–25 °C)
Not required for germination pH: 5.5–5.9
SME 0.9–1.3 mS/cm
Comments: Soil temperatures lower than 75 °F (23 °C) during germination may decrease germination rates. Keeping media pH at 5.8 or lower will help reduce the likelihood of Thielaviopsis infections.
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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