Cirsium arvense

(redirected from California Thistle)
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Noun1.Cirsium arvense - European thistle naturalized in United States and Canada where it is a pernicious weedCirsium arvense - European thistle naturalized in United States and Canada where it is a pernicious weed
plume thistle, plumed thistle - any of numerous biennial to perennial herbs with handsome purple or yellow or occasionally white flower heads
References in periodicals archive ?
The property was also covered in California Thistle which stood higher than our heads.
Non-target impact of the weed biological control agent Rhinocyllus conicus on rare native California thistles in the genus Cirsium.

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