Spiny Cocklebur


	Xanthium spinosum
	Family Name:	Asteraceae
	Class:	C
	Other Names:	prickly burweed
	Why is it a noxious weed?	Its spiny burrs can become tangled in the hide of cattle and horses and in the wool of sheep. It can provide competition for summer crops and is a nuisance to pickers in hand-harvested crops. The seeds and cotyledonary seedlings are poisonous.

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Visit Washington State Noxious Weed Control Board Here