Cirsium flodmanii, common names Prairie thistle, Flodman’s thistle, or (in French) chardon de Flodman, is a plant species native to Canada and to the northern United States. It has been found in every Canadian province from Québec to Alberta, as well as from the northern Great Plains, northern Rocky Mountains, and western Great Lakes regions of the US, as well as northern parts of Vermont, New York, and Washington.