Diffuse Knapweed
Centaurea diffusa

Diffuse Knapweed Adult It is an annual or a short-lived perennial averaging one to two feet tall.
Diffuse Knapweed rosette Leaves have finely divided lobes.
Weed Infestation
Diffuse Knapweed infestation
Native to Eurasia, diffuse knapweed inhabits dry rangeland, roadsides, field edges, and waste areas. Knapweed's release chemical substances into the soil that inhibit the growth of competing vegetation.
Diffuse Knapweed flower
Flowers are white to rose in color. Diffuse knapweed differs from squarrose knapweed in that toothed flower bracts are straight rather than arched outward. It blooms throughout summer.