Toxicity | Toxic. All livestock, most especially cattle and horses. |
Control | Hand-pulling, biological and herbicide. Contact your County Weed District or local Applicator for more information. |
Habitat | Grasslands, disturbed areas, forests, pastures, rangelands and clear-cuts. |
Root | Taproot with some lateral roots. |
Leaf Shape | Deeply lobed with ruffled edges. |
Lifespan | Biennial; two years to complete life cycle. |
Priority 2A Weed | Common in isolated areas of Montana. |
Similar Looking Plants | St. Johnswort and groundsel. |
Important Information | Tansy can re-grow if the roots are broken off or anytime the plant is cut. Covering the site with mulch will help prevent new germination. Leaves produce strong odor when crushed. |