Diffuse Knapweed

Diffuse KnapweedDIFFUSE KNAPWEED

Centaurea diffusa Lam. Asteraceae (sunflower family)

Colorado Dept. of Agriculture Class B

List B Eradication Required

Aliases: Spreading Knapweed, tumble knapweed, white knapweed
Annual: (1 yr life cycle). Most commonly a short-lived perennial (survives the winter but doesn’t do well the 2nd yr.); occasionally a biennial (needs 2 yrs to complete its life cycle).

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