Rural Lifestyle

Biennial Thistles of Iowa

Biennial thistles are commonly found in Iowa's pastures, roadsides, CRP and other un-tilled areas.  Musk (Carduus nutans ) and bull (Cirsium vulgare) thistle are exotic species (originate from outside of North America) and are responsible for the majority of problems caused by this group of plants. Read more about identification, characteristics and removal methods.

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