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Republic, WA  99166

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weed board

Noxious Weed Lists and Laws

What is a noxious weed?

Noxious weeds are non-native plants that have been introduced to Washington through human actions. Because of their aggressive growth and lack of natural enemies in the state, these species can be highly destructive, competitive or difficult to control.

Noxious weeds are everybody's problem. Each year, these plants cost Washington millions of dollars. Noxious weeds result in losses estimated at 24% of Washington's gross agricultural product.

2014 Ferry County Noxious Weed List

Washington State Noxious Weed Control Board
Noxious Weed Search

Washington's Noxious Weed Laws

Weed laws establish all property owners' responsibility for helping to prevent and control the spread of noxious weeds. Since plants grow without regard to property lines or political jurisdictions, everyone's cooperation is needed - gardeners, farmers, government land agencies, foresters, and ranchers all have a role to play.

The Laws

RCW 17.10
Revised Code of Washington is the state's basic weed law.

WAC Chapter 16-750
Includes the state Noxious Weed List, definitions and descriptions of region boundaries for Class B weeds, and the schedule of monetary penalties.

WAC Chapter 16-752
Describes the quarantine list maintained by the state Department of Agriculture. (The state law that calls for the creation and maintenance of the quarantine list is RCW 17.24.)

Canada Thistle

Canada Thistle (Cirsium arvense)