Canada thistle

n. A perennial herb (Cirsium arvense) in the composite family, native to Europe and naturalized as a noxious weed in North America, having spiny-margined leaves and rose-purple or sometimes white flower heads.

Canada thistle

n (Plants) the US and Canadian name for creeping thistle

Can′ada this′tle

n. an Old World prickly composite plant, Cirsiumarvense, having small purple or white flower heads, now a troublesome weed in North America. [1790–1800, Amer.]

Thesaurus

Noun

Canada thistle - European thistle naturalized in United States and Canada where it is a pernicious weedCirsium arvense, creeping thistleplume thistle, plumed thistle - any of numerous biennial to perennial herbs with handsome purple or yellow or occasionally white flower heads

Canada thistle

Canada thistle:

see thistlethistle,
popular name for many spiny and usually weedy plants, but especially applied to members of the family Asteraceae (aster family) that have spiny leaves and often showy heads of purple, rose, white, or yellow flowers followed by thistledown seeds (a favorite food of the
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Canada thistle

Canada thistle

Canada thistle

Can′ada this′tle

Canada thistle

Canada thistle:

Canada thistle

Synonyms for Canada thistle

noun European thistle naturalized in United States and Canada where it is a pernicious weed

Synonyms

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