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 Common Wood Nymph, Honey-bellied Agapostemon, Brown-belted Bumblebee, and Green Skipper. Individuals can grow to 1.2 m.
EOL has data for 21 attributes, including: