Diffuse Knapweed

Centaurea diffusa

 A diffuse knapweed plant just before it starts to produce flower heads.

A diffuse knapweed plant just before it starts to produce flower heads.

 A flowering diffuse knapweed plant. Once this plant produces seed, the plant will dry and the wind will carry it like a tumbleweed dispersing seeds. 

A flowering diffuse knapweed plant. Once this plant produces seed, the plant will dry and the wind will carry it like a tumbleweed dispersing seeds. 

Diffuse knapweed infestation near Owhi Lake. This population of knapweed plants has an active population of biological controls. 

Please visit NWBC for more information on this weed.