Marsh plume thistle
About This Species
Marsh plume thistle (Marsh thistle, European swamp thistle) is a biennial plant native to Europe 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 cut blocks. Seeds spread by wind, water, birds, vehicles, and equipment. Marsh plume thistle is designated as a Regional Noxious Weed by the BC Weed Control Act, as well as a Regional Containment/Control species by the BC Provincial Priority Invasive Species List.
How to Identify
Marsh plume thistle has a single, slender, unbranched stem with spiny wings that can grow up to 1.5 m in height.
Leaves are spiny, hairy and have woody veins on the underside.
Purple flowers cluster at the end of stems.
Take Action
Prevention is the best approach.
- Marsh plume thistle Factsheet PDF
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If you need advice about invasive species on your property or you are concerned about reported invasives in your local area, contact your local government or regional invasive species organization.
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