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Seed Germination Chart

Some Abbreviations Used
A: Annual - a plant which lives one year only from seed.
P: Perennial - a plant which comes back every year.
H: Indicates a plant hardy in northern zones.
T: Indicates a tender plant, shrub (sh), or tree (t) which will not winter over in northern zones.
IS: In Situ; can be planted outside directly where it is to grow.
JC: Just Cover; barely cover with soil
SS:Surface Sow; press seeds gently into to the soil to make good contact, but do not cover with any additional soil; these seeds require light to germinate.
L/D: Light or Dark; seeds which require dark should have the flat covered with newspaper or brown paper or something similar to keep light from getting to the seeds. Plants requiring light to germinate are to be surface sown.
S/I: Germination is slow and irregular
HH: Half hardy. If an annual, it will usually not reseed itself in northern zones, and if perennial, will be killed by freezing temperatures.
TP: Tender perennial (or shrub, etc). Will not winter over in northern zones, but makes a good greenhouse specimen.
GHS: Tropical or delicate plant best grown in greenhouse.
BB: Bulb.

NOTE: The heading 'Medium' refers to a sterile potting soil.

PlantDays for
Temp °FMediumDepth of
Special Info
Fagus (ht)30-365 s/iL50-60Well-drained JC#2 overnight, then #3 for 6 weeks.
Fascicularia (hhp)30-120 s/iL60-70Peaty SSSee Begonia
Fatsia (hhsh)15-20.70-75Peaty ¼"Keep soil slightly moist.
Faucaria (tp)14-30 s/i.60Well-drained JCJust cover with sharp sand.
Feijoa (hhsh)21-42.55-60Peaty 1/16"Rinse seeds 3 times before sowing.
Felicia Amelloides (hhp)30.55-60Well-drained JC#3 for 3 weeks.
Felicia Bergeriana (hha)30.70Well-drained JC.
Ferns (hp, tp)30-180L65Peaty SSSee Ferns
Ficus (tsh)15-90 s/iL70-80Peaty SSSee Begonia
Filipendula (hp)30-90.55-60Well-drained JC.
Flowering Cabbage & Kale (hb)14-21.70-75Peaty 1/8"Can be sown IS.
Foeniculum (hp)10-14D65Well-drained 1/8"Sow IS. Resents transplanting.
Forsythia (hsh)30-90.55-65Well-drained JC.
Francoa (hhp)14-30 s/iL50-55Peaty SSSee Bonsai
Freesia (hhbb)25-30 s/i.65-75Peaty ¼"#2 for 24 hours.
Fremontodendron (hhsh,hsh)30-60.65-70Well-drained JC.
Fritillaria (hbb)330-540 s/i.55-60Peaty 1/16"See Bonsai
Fuchsia (tp)21-90 s/iL70-75Peaty SS#2 in rain water for 3 to 4 days. Keep moist. See Begonia
Fuchsia (hsh)21-90 s/iL70-75Peaty SS#2 in rainwater for 3 to 4 days. Keep moist. See Begonia

© 2001 by Ernestina Parziale