- Flowers: purple, up to 2” in diameter with spiny red-tipped bracts
- Leaves: covered in white cob-webby hairs, up to 2’ long, spines along edges
- Stems: up to 9’ tall with fins
- Reproduction: seeds
- Problems: invades rangeland, degrades wildlife habitat
To learn more about weeds in our area, call 289-6341 Paid for by the Steptoe/Butte Valley Cooperative Weed Management Area, a partnership of federal, state and county agencies, non-profit organizations, and private individuals dedicated to the control of noxious and invasive weeds.