SEED PROPAGATION
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 ™ / 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.
Salvia MOJAVE ™ / SENTRY ™ / SIZZLER ™ OP Salvia splendens 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
5–7 days
72–75 °F (22–24 °C)
Not required for germination pH: 5.5–5.9
SME 0.5–0.75 mS/cm
Comments: Salvia is sensitive to high salts in the plug tray, so do not let the EC rise above 1.5 mS/cm. After fertilization, rinse the plants off with clear water to avoid burning the young growing tips.
Salvia VICTORIA ™ OP Salvia farinacea 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
5–7 days
72–75 °F (22–24 °C)
Not required for germination pH: 5.5–5.8
SME 0.5–0.75 mS/cm Comments: Salvia is sensitive to high salts in the plug tray, so do not let the EC rise above 1.5 mS/cm. After fertilization, rinse the plugs off with clear water to avoid burning the young growing tips. Salvia farinacea is a long day crop so extending the day length to 16-hours with HID lights at true leaf stage is beneficial.
Schizanthus ATLANTIS ™ F1 Schizanthus × wisetonensis REC TRAY FORMS PLUG TIME
SEEDS/CELL SEED COVER GERM TIME
SOIL TEMP
GERM LIGHT
MEDIA pH/EC
288-cell tray
Raw
4–7 weeks
1
Yes
7–14 days
62–65 °F (17–19 °C)
Not required for germination pH: 5.8–6.2
SME 0.25–0.5 mS/cm
Comments: Keep plugs under short days to avoid premature flowering.
Snapdragon LIBERTY ™ CLASSIC / MADAME BUTTERFLY ™ F1 Antirrhinum majus 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
5 days
72–75 °F (22–24 °C)
Not required for germination pH: 5.5–5.9
SME 0.5–0.75 mS/cm Comments: High pH levels (above 6.2) may promote iron deficiency causing chlorotic young leaves. Overly wet conditions or watering late in the day can cause shoot tip abortion. Keeping the media too wet can also lead to root rot diseases such as Pythium.
GROWER SUCCESS GUIDE 2023-2024 | ANNUALS
12
Made with FlippingBook Learn more on our blog