Spikeweed

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	Hemizonia pungens
	Family Name:	Asteraceae
	Class:	C
	Other Names:	common tarweed, maritime spikeweed
	Why is it a noxious weed?	Spikeweed is an agricultural pest in the Columbia Basin (southeastern Washington), forming dense stands. It is also avoided by livestock.

More Information:

Visit Washington State Noxious Weed Control Board Here