Spotted Knapweed

       

Spotted Knapweed (Centaurea stoebe) Sunflower family

Small infestations found in Fairbanks area - Report immeddiately if found! Call 479-1213

Biennial plant that grows up to 3 feet tall from a stout taproot. Basal rosettes have deeply lobed gray-green leaves. Flower heads pink-purple, consisting of ray florets only, solitary at the end of stem branches.Involucral bracts are topped with dark comb-like fringe giving a spotted appearance.

Spreads only by seed. Adapted to well-drained soils. Responsible for millions of dollars in economic loss and environmental damage in the western United States.

Not known to occur in Fairbanks; however, found in Anchorage, Valdez, and numerous locations in Southeast Alaska. Look for this plant in natural and unnaturally disturbed areas.

More information

Distribution

U.S. Army Corp of Engineers UAF Cooperative Extension Service Alaska Department of Fish and Game U.S. Forest Service Partners for Fish & Wildlife National Park Service