Silphium terebinthinaceum  |
| Family | Compositae |
| Plant Type | herbaceous perennial |
| Zone | USDA: 4a - 8b RHS: H EGF: H1 - H4 Australia: 1 - 2 |
| Care Level | low, easy, suitable for beginners. |
| Height | 0.9 - 3 m (3 - 10 ft) |
| Spread | 30 - 90 cm (1 - 3 ft) |
| Light | full sun |
| Soil Moisture | average, well-drained |
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| Description | The herbaceous perennial Silphium terebinthinaceum (prairie dock) yields showy blossoms during mid-summer to early fall. |