Bull Thistle  -  Asteraceae  (Aster Family)  Cirsium  vulgare
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Photo Details
September 19, 2005, Butterfield Canyon, Salt Lake County, Utah - ©Nicky Davis

A non-native plant  up to 5 feet  tall, 1 1/2 inch pinkish-purple  flowers bloom midsummer. Stem leaves are pinnately lobed, hairy and prickly on the top and cottony below.  Bracts are narrow and tipped with a spine. Seeds are topped by a circle of white hair like plumes.

For photos of the butterfly that uses this plant as a Host plant, click on MYLITTA CRESCENT - PHYCIODES MYLITTA

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