Also called marsh thistle, although do not confuse with similar-named sister-species 🇪🇺 ♒︎ European swamp thistle  Cirsium palustre which is also sometimes called that.

Part of plume thistle  genus Cirsium in aster / daisy / 🌻︎ sunflower  family Asteraceae.

Native to 🇨🇦 Canada and 🇺🇸 USA, east of the 🗻︎ Rocky Mountains.

Uses by native peoples
(Ethnobotany database)

Bloom dates (NE Illinois).  Adobe Acrobat Reader file (page 2)  (🔒︎ Wild Ones members only)

Learn more about ♒︎ swamp thistle Cirsium muticum

🔍︎ 🔍︎ images Discover Life Encyclopedia of Life Michigan Flora Minnesota Wildflowers Missouri Plants Flora of North America NRCS PLANTS db Wikipedia