Silphium terebinthinaceum
Prairie Dock

Silphium terebinthinaceum, Prairie Dock

Prairie Dock
Small yellow flower heads like sunflowers bloom at the ends of narrow stalks on this perennial. It takes at least two years to blossom. Once begun, it blooms August to October. Attracts birds and butterflies.

Grow specs: To 8 feet. Fertile, well-drained land or dry soils. Full sun. Stratify 30 days at 41 degrees F. or plant in fall.


The huge heart-shaped leaves smell of turpentine when crushed.

Medicinal uses same as Compass Plant. The two are companionable grown in the same area.

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