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• Noxious Weed Office

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(509) 422-7165

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Downloadable Publications  

New Invaders

Class A Noxious Weeds

B-Designate Noxious Weeds

B-Designate⁄Class B—Hoary Alyssum

Class B & C Noxious Weeds

Eurasian watermilfoil

Okanogan Noxious Weed Control Board

Biological Control of Noxious Weeds

Biological Control Program Information

Request for Biological Agents Form

Population Explosion of Spotted Knapweed

Backpack Sprayer Calibration Guide

2012 Calendar's Cover

2012 Calendar—Month of January