Looking to understand agroforestry topics you may have heard about? A Sustainable Agriculture Research and Education (SARE) grant helped develop these fact sheets.
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.