Cirsium undulatum (Wavyleaf Thistle) 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 and achenes. Flowers are visited by Leonard's skipper, Edwards' Fritillary, Brown-belted Bumblebee, and Anthophora terminalis. Individuals can grow to 1.2 m.
EOL has data for 24 attributes, including: