Field Guide to Noxious and Other Selected Weeds of British Columbia

Diffuse Knapweed
(Centaurea diffusa)

Provincial Noxious Weed
biennial to short-lived heavily branched taprooted perennial growing from 0.6 to 1 metre in height; divided leaves grayish-green in colour, hairy; very bitter to the taste
white, occasionally purple flowers; bracts of the flowerheads with small, sharp, rigid spines
one of 13 "knapweed" species in British Columbia

	Rigid spines on tips of flower bracts
	Bolting plant

Use scroll bars to locate a weed of interest. Double-click on weed name to open page.

Browse by Common Name

Browse by Latin Name