| Description | A tall native Thistle. |
|---|---|
| Plant Type | All Plants, Biennials |
| Hardiness Zone | 5 |
| Sunlight | full |
| Moisture | average, dry |
| Soil & Site | average |
| Flowers | roundish ball head, pink to purple disk flowers, bracts subtending flower head |
| Fruit | seeds spread on "Thistledown" |
| Leaves | simple large leaves, shallow lobed but not divided, spiny teeth, whitish underneath with a dense fuzz |
| Stems | pubescent stem |
| Roots | tap root |
| Dimensions | 3-4 to 10 feet |
| Propagation | seeds floating on Thistledown (pappus) |
| Misc Facts | Cirsium isderived from the Greek word kirsion, "a kind of thistle". Cirsos meaning "a swollen vein" for which thistle was once a remedy. Altissimum is Latin for "especially tall" |
| Notes & Reference | #56-Tall Grass Prairie Wildflowers (Doug Ladd), #100-Wildflowers of Wisconsin and the Upper Midwest (Merel Black and Emmet Judziewicz), #140-Prairie Plants of the UW Madison Arboretum (Theodore Cochrane, Kandis Elliot, Claudia Lipke) |
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