Nov. 2, 2018
prairie thistle, Cirsium canescens
Thistle species are another proliferating wildflower as one gets farther west. Prairie thistle is native to the western plains and Rockies, and has been moving both east and west in modern times. It has now been reported from CA, CO, IA, ID, MO, MT, ND, NE, NM, OH, SD, WI, and WY. Lake Co CO, 6/20/13.