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Oklahoma State University Stillwater, OK |
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Oklahoma Alfalfa |
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Oklahoma State University Stillwater, OK |
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Oklahoma Alfalfa |
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Wavyleaf Thistle |
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| COMMON NAME: | Wavyleaf Thistle |
| SCIENTIFIC NAME: | Cirsium undulatum |
| TYPE: | Perennial Cool-season Broadleaf |
| DESCRIPTION | |
| Germination: | In late Spring and early Summer (June-July) |
| Reproduction: | By seeds and root buds. |
| Stems: | Erect, sparingly branched and nearly round. |
| Flowers: | May be either purple to pinkish-purple or white corolla. |
| Leaves: | The leafs of Wavyleaf Thistle alternate and have simple blades and rosette leaf blades. The rosette leaf blades are elliptic lobed with the lobes being tipped with a yellow spine and the margins strongly undulated. |
| Fruit: | One-seeded, tan to brown achene with a yellow collar, smooth, flattened, and slightly curved. |
| Found: | Wavyleaf Thistle is found primarily on abused rangelands, prairies, pastures, meadows, and disturbed sites. |
| Control: | |
Jim Stritzke Former Alfalfa Weed Control Specialist Department of Plant and Soil Sciences Oklahoma State University |
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