Noxious: Montana’s Battle With Spotted Knapweed, and What Birders Can Do
10,000 Birds
JULY 25, 2014
(Indeed, some reports take the term ‘noxious’ quite literally, stating that knapweeds exude natural herbicides to discourage competition and can cause irritation to the skin of humans trying to pull them; one rumor gives them the power to induce ‘hand cancer’ if not handled with gloves.) And yet it persists.
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