2022-2023 Grower Success Guide | NA

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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