2021-2022 Grower Success Guide | NA

SEED PROPAGATION

Celosia BRIGHT SPARKS ™ OP Celosia plumosa erecta REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray pH: 5.5–5.9 SME 0.9–1.3 mS/cm Comments: Bright Sparks is a facultative short day variety and will flower faster under short days. If sowing under short days, it is vital to grow the plugs under a day length of at least 14 hours to promote sufficient vegetative growth before flowering. Raw 4–5 weeks 1 Yes 2–4 days 70–75 °F (21–24 °C) Required for germination

Cleome SPARKLER ™ 2.0 F1 Cleome hassleriana REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Raw

3–4 weeks

1

Yes

4–6 days

80–85 °F (26–30 °C) days 68–70 °F (20–21 °C) nights

Required for germination

pH: 5.5–5.9 SME 0.9–1.3 mS/cm

Comments: A 15 °F positive DIF is recommended for best germination results. Cleome is a heavy feeder; start feeding in the plug about two weeks after sowing.

Cosmos APOLLO ™ OP Cosmos bipinnatus 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

3–4 days

61–65 °F (16–18 °C)

Not required for germination pH: 5.5–5.9

SME 0.25–0.5 mS/cm

Comments: Cosmos will flower early under short days, so to allow bulking of the plug provide a 14 hour day length during propagating.

Cuphea SRIRACHA ™ F1 Cuphea llavea REC TRAY FORMS

PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Raw

3.5–4 weeks

1

Yes

3–5 days

70–75 °F (21–24 °C)

Not required for germination pH: 5.8–6.2

SME 0.5–0.75 mS/cm Comments: Only the first application of plant growth regulators (PGR) is necessary for the plug. After two weeks, you can alternate moisture between 2 and 4 to help tone the plugs. Provide supplemental lighting if possible if DLI is lees than 8 mols/day.

Dahlia FRESCO ™ OP Dahlia hybrida 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.

Dahlia HARLEQUIN ™ OP Dahlia hybrida 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 DIABUNDA ® F1 Dianthus × barbatus 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 ADT of 60 °F (21 °C) will reduce the need for PGRs. Day extension lighting to 14 hours will hasten flowering of the finished plant.

Dianthus SUPER PARFAIT ™ F1 Dianthus chinensis 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 ADT of 60 °F (21 °C) will reduce the need for PGRs. Day extension lighting to 14 hours will hasten flowering of the finished plant.

Dianthus VENTI PARFAIT ™ F1 Dianthus chinensis 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 ADT of 60 °F (21 °C) will reduce the need for PGRs. Day extension lighting to 14 hours will hasten flowering of the finished plant.

G R O W E R S U C C E S S G U I D E 2 0 2 1 – 2 0 2 2 | A N N U A L S

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