Silphium terebinthinaceum (Prairie Dock) Wildflower Seed

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Origin: US Native

Other Common Names: Prairie Rosinweed

Duration: Perennial

Bloom Time: August-September

Height: 8' to 10'

Spacing: 12” to 15”

Light: Full Sun to Part Shade

Soil Moisture: Medium

USDA Zone: 4a-8b

Germination: Fall plant or cold stratify for 1 to 3 months for best results. Sow seeds just below the soil surface at 70F and water.

Seeds Per Oz: 1000


Sunflower like blooms perch on top of nearly leafless stems that reach heights of ten feet! The bright yellow flowers bloom in loose clusters on the upper parts of the plant from mid to late summer, and can reach three inches wide. The lower parts of the plant is where you will find the large, dark green, heart-shaped leaves. Expect to see bees and Ruby-Throated Hummingbirds at these showy blooms! Goldfinches will also visit as the seeds ripen!

Silphium terebinthinaceum (Prairie Dock) Distribution Map
Silphium terebinthinaceum (Prairie Dock) Wildflower Seed

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