Field Guide to Noxious and Other Selected Weeds of British Columbia
Yellow Starthistle
(Centaurea solstitialis)
- Provincial Noxious Weed
- annual taprooted heavily branched weed growing from 0.6 to 1 metre
tall; stems are winged and covered with fine hair; yellow flowers are
borne on ends of branches and armed with sharp thorns up to 2 cm long
- not currently known from British Columbia but close to our borders
with Washington and Idaho
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Flowerhead bracts end in sharp, stiff spines |
Photos courtesy Ben Roche, Washington State University
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