Approximately 50 seeds per gram
seed-counts are only a guide, not to be used for accurate calculations.
B and T World Seeds' reference number:
USDA average, annual, minimum temperature Zone:4
Type of plant - perennial
Flower: YELLOW, capitulae in infl.
Fruit: winged cypsela. (stratify 2 months - GA-3 treat, germ. warm 2-4 weeks)
Foliage: to 30x15cm., con. perfol., collects water
Height in meters: 2-4
Common names for Silphium perfoliatum:
is included in the following B and T World Seeds flowering plant categories:
1: Species in Stock at B and T
36: Herb Seed List Culinary Medicinal Dye and Aromatic
45: Bee and Butterfly Attracting also Honey and Pollen Plant Seeds
86: Natives of U.S.North East
87: Natives of Central U.S.A.
89: Natives of U.S.South East
95: Canadian Natives Central Area
96: Canadian Natives Eastern
185: Plant Species whose germination is improved by Smoke
719: North American Native Ethnobotanicals
952: Wholesale Selection