| Description | Mohr’s Rosinweed (Silphium mohrii) is a tall native perennial. It has large basal leaves and reaches about 5 feet tall with pale yellow flowers. |
|---|---|
| Pronunciation | (SIL-phee-um) |
| Plant Type | Perennials Hardy, Wild Flowers |
| Hardiness Zone | 5-8 |
| Sunlight | full |
| Moisture | average-to-dry |
| Soil & Site | A rocky to gravelly or well-drained soil with low fertility. |
| Temperature | Tolerate extreme summer heat. |
| Flowers | Pale yellow 2” wide flowers are borne on erect, 2-5’ tall stems that branch near the top. |
| Fruit | brown seeds |
| Leaves | The lance-shaped green basal leaves are large, reaching 10-15” long and gradually becoming smaller as they ascend the stems and have dense, fine, bristly hairs |
| Stems | Stems are covered with dense, fine, bristly hairs. |
| Dimensions | Gets 3-5 feet tall and forms clumps. |
| Propagation | seeds |
| Misc Facts | Mohr’s rosinweed was chosen by American botanist John Small in 1897. It honors Charles Mohr, an Alabama-based pharmacist and botanist |
| Notes & Reference | #238-Mt Cuba Center (www.mtcubacenter.org) |
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