Approximately 500 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: ORANGE-YELLOW, cap. to 6cm. dia.
Foliage: obl.-ov., to 20cm. long
Height in meters: 1.2
Common names for Helianthus occidentalis:
is included in the following B and T World Seeds flowering plant categories:
6: Bulbous and Rhizomatous Plant Seed List
43: Herbaceous Border Plant Seed List
44: Cut flowers Commercial and other Recommended Varieties
85: Natives of U.S.South West (Arizona Texas New Mexico)
89: Natives of U.S.South East
161: Edible Flowers
185: Plant Species whose germination is improved by Smoke
719: North American Native Ethnobotanicals
Helianthus occidentalis seeds will usually germinate in 10-14 days. Sow seeds about 6mm deep in a Peaty seed sowing mix at about 20-30°C.
Can be sown in situ.