Invasive Plant

Marsh Plume Thistle

Cirsium palustre

About This Species

Native to Europe, Marsh plume thistle is a biennial that prefers moist to wet, naturally open or disturbed areas. Plants will replace native vegetation in natural areas and are also known to compete with tree seedlings that have been planted in cutblocks. Seeds spread by wind, water, birds, vehicles, and equipment. Marsh plume thistle is considered a noxious weed in parts of BC.

How to Identify

Marsh plume thistle has a single, slender, unbranched stem with spiny wings. Purple flowers cluster at the end of stems, and leaves are spiny, hairy and have woody veins on the underside. Plants can grow up to 1.5 m in height.

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