Tansy Ragwort (Senecio jacobaea)

Washington State Noxious Weed Control Board

Traditional / reference

Abstract

Noxious-weed profile of tansy ragwort: it is toxic and can sicken or kill cattle, horses, goats, pets and people, with highest risk after cutting or mixing into hay; it is distinguished from common tansy in that tansy ragwort has daisy-like flowers with about 13 ray petals and kale-like ruffled leaves, whereas common tansy has flat button-like flowers with no petals and fern-like leaves. Anchors the tansy-versus-ragwort confusion and the flower/leaf distinguishing test.

How to cite

Washington State Noxious Weed Control Board 'Tansy Ragwort (Senecio jacobaea)'. Available at: https://www.nwcb.wa.gov/weeds/tansy-ragwort

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