2021-2022 Grower Success Guide | NA

SEED PROPAGATION

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.

Marigold African INCA II ™ 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 PERFECTION ™ 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 French anemone ALUMIA ™ OP Tagetes patula nana REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Coated, Detailed

3–4 weeks

1

Yes

3–5 days

68–72 °F (20–22 °C)

Not required for germination pH: 5.8–6.2

SME 0.5–0.75 mS/cm Comments: Very easy to germinate on the bench. If seedlings get stretched, they can be planted deep at transplanting, and new roots will form along the stems. Do not hold too long in the plug tray or stress-induced flowering may occur, and plants will flower before bulking up to a satisfactory size.

Marigold French dwarf crested HAPPY ™ OP Tagetes patula nana REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Detailed, SatinCoat ™

3–4 weeks

1

Yes

3–5 days

68–72 °F (20–22 °C)

Not required for germination pH: 5.8–6.2

SME 0.5–0.75 mS/cm Comments: Very easy to germinate on the bench. If seedlings get stretched, they can be planted deep at transplanting, and new roots will form along the stems. Do not hold too long in the plug tray or stress-induced flowering may occur, and plants will flower before bulking up to a satisfactory size. Happy is a genetically compact series, so chemical growth regulators are usually not necessary. Control can also be gained by good moisture management and applications of various growth regulators if needed.

Marigold Interspecific ENDURANCE ™ F1 Tagetes triploid REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

SatinCoat ™

3–4 weeks

1

Yes

3–5 days

68–72 °F (20–22 °C)

Not required for germination pH: 5.8–6.2

SME 0.5–0.75 mS/cm Comments: Very easy to germinate on the bench. If seedlings get stretched, they can be planted deep at transplanting and new roots will form along the stems. Do not hold too long in the plug tray or stress-induced flowering may occur and plants will flower before bulking up to a satisfactory size.

Marigold Interspecific ZENITH ™ F1 Tagetes triploid REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Detailed

3–4 weeks

1

Yes

3–5 days

68–72 °F (20–22 °C)

Not required for germination pH: 5.8–6.2

SME 0.5–0.75 mS/cm Comments: Very easy to germinate on the bench. If seedlings get stretched, they can be planted deep at transplanting, and new roots will form along the stems. Do not hold too long in the plug tray or stress-induced flowering may occur, and plants will flower before bulking up to a satisfactory size.

Mimulus MAGIC ™ F1 Mimulus × hybrida 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

5–7 days

65–68 °F (18–20 °C)

Not required for germination pH: 5.5–5.9

SME 0.5–0.75 mS/cm

Comments: Provide day extension lighting to 14 hours under short days using mum type lights (10 foot candles). Using HID lights can promote too early of flowering.

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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