2022-2023 Grower Success Guide | NA

SEED PROPAGATION

Petunia multiflora HURRAH ™ F1 Petunia multiflora 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

3–5 days

72–76 °F (22–24 °C)

Required for germination

pH: 5.5–5.9 SME 0.9–1.3 mS/cm

Comments: Covering seed is not necessary, but a light vermiculite coating will help maintain moisture levels in drier climates. Keep pelleted seed at moisture level 5 the first several days to ensure the pellet is completely dissolved. Providing long days in the plug stage will reduce overall time to flower. Low boron levels can induce tip abortion. Spraying an uneven plug tray with B-Nine ® WSG at 1,500 ppm may help even the growth in the tray.

Petunia spreading FOTOFINISH ® F1 Petunia pendula 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

3–5 days

72–76 °F (22–24 °C)

Required for germination

pH: 5.5–5.9 SME 0.9–1.3 mS/cm

Comments: Covering seed is not necessary, but a light vermiculite coating will help maintain moisture levels in drier climates. Keep pelleted seed at moisture level 5 the first several days to ensure the pellet is completely dissolved. Providing long days in the plug stage will reduce overall time to flower. Low boron levels can induce tip abortion. Spraying an uneven plug tray with B-Nine ® WSG at 1,500 ppm may help even the growth in the tray.

Petunia spreading grandiflora SKYBOX ™ F1 Petunia pendula 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: Covering seed is not necessary, but a light vermiculite coating will help maintain moisture levels in drier climates. Keep pelleted seed at moisture level 5 the first several days to ensure the pellet is completely dissolved. Providing long days in the plug stage will reduce overall time to flower. Low boron levels can induce tip abortion. Pelleted 4–5 weeks 1 No 3–5 days 72–76 °F (22–24 °C) Required for germination

Petunia spreading milliflora FLASHFORWARD ™ F1 Petunia pendula 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

3–5 days

72–76 °F (22–24 °C)

Required for germination

pH: 5.5–5.9 SME 0.9–1.3 mS/cm

Comments: Covering seed is not necessary, but a light vermiculite coating will help maintain moisture levels in drier climates. Keep pelleted seed at moisture level 5 the first several days to ensure the pellet is completely dissolved. Providing long days in the plug stage will reduce overall time to flower. Low boron levels can induce tip abortion. Spraying an uneven plug tray with B-Nine ® WSG at 1,500 ppm may help even the growth in the tray.

Phlox POPSTARS ™ F1 Phlox drummondii 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

3–5 days

68–72 °F (20–22 °C)

Not required for germination pH: 5.5–5.9

SME 0.5–0.75 mS/cm

Comments: Keep EC less than 0.75 mS/cm and avoid the dry-growing method of growth control, as Phlox drummondii are sensitive to high salts.

Primula LIBRE ™ F1 Primula obconica REC TRAY FORMS

PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Raw

6–7 weeks

1

Yes

7 days

72–75 °F (22–24 °C)

Not required for germination pH: 5.5–5.9

SME 0.5–0.75 mS/cm

Comments: Control thrips to avoid Tospovirus.

Primula PRIMERA ™ F1 Primula acaulis 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

7 days

64–68 °F (18–20 °C)

Not required for germination pH: 5.5–5.9

SME 0.5–0.75 mS/cm

Comments: Grow plugs on the dry side to avoid excessive algae growth.

Ranunculus MACHÉ ™ F1 Ranunculus asiaticus REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Raw, Pelleted

8–10 weeks

1

Yes

14–21 days

50–55 °F (10–13 °C)

Not required for germination pH: 5.5–5.9

SME 0.5–0.75 mS/cm

Comments: Control thrips to avoid Tospovirus.

Ranunculus MAGIC ™ F1 Ranunculus asiaticus REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Raw, Pelleted

8–10 weeks

1

Yes

14–21 days

50–55 °F (10–13 °C)

Not required for germination pH: 5.5–5.9

SME 0.5–0.75 mS/cm

Comments: Control thrips to avoid Tospovirus.

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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