Cirsium undulatum is a species of biennial herb in the family Asteraceae. They have a self-supporting growth form. They are native to The Contiguous United States and Canada. They have simple, broad leaves. Flowers are visited by Hesperia ottoe, Snow?s Skipper, Anthophora terminalis, and Atrytonopsis. Individuals can grow to 1.2 m.
EOL has data for 17 attributes, including: