GROWER SUCCESS GUIDE | SEED PROPAGATION
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 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.
Snapdragon 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.
Snapdragon SNAPTASTIC ™ 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, Pelleted
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.
Snapdragon Dwarf SNAPTINI ™ 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, Pelleted
5–6 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.
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.
Torenia DUCHESS ™ 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.
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