Silphium terebinthinaceum

Common Name: prairie dock
Plant Type:Herbaceous
Light (original): sun
Light Requirements: Sun
Height:4 to 8 feet
Width:3 to 4 feet
Soil Type:moist to dry
Soil Moisture:Dry, Mesic
Seed Ripens:
USDA Zones:3 to 9
Flower Colour:yellow, sunflower-like
Bloom Time:late summer
Comments:Moist prairie. Seeds are a favourite of goldfinches.
Germination:Seed will germinate upon being shifted to 70°F after 90-140 days of moist, cold stratification at 40°F.
Germination Notes:
Grow Notes:
Picture Copyright: