Invasive Plant

Tansy Ragwort

Senecio jacobaea
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Warning

Tansy ragwort can cause liver damage in livestock.

About This Species

Tansy ragwort is a biennial to short-lived perennial that grows in pasturelands and disturbed areas. Seeds are easily transported by wind, soils, human activity, and livestock. A single plant can produce 150,000 seeds that can survive in the soil for up to 15 years.

How to Identify

Tansy ragwort has bright yellow daisy-like flowers with 10-15 petals each. Flowers are arranged in a dense, flat-topped cluster at the top of a purplish stem. Leaves are dark green and ruffled, becoming ragged in appearance during their second year of growth. Plants grow from 0.2 to 1.2 m in height.

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