Prairie dock (Silphium terebinthinaceum)
The very large, vertical leaves (blade up to 3 dm broad on long petioles) make this a plant recognizable from a distance even without the tall (at least to 3.5 m) stem with large heads. The large woody taproot is likewise impressive.
Shade Tolerance: Full to part Sun
Moisture: Dry to Moist
Soils: Sand, loam, clay
Height: 3-10 ft.
Bloom Time: July - Sept.
Deer Resistant: Yes
Uses: Butterflies, Pollinators
Other: Long taproot
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