Helpful Noxious Weed Information

What is a noxious weed?

A terrestrial, aquatic, or marine plant designated by the State Weed Board under ORD 569.615 as among those representing the greatest public menace and as a top priority for action by weed control programs. 

"A" Listed: weed of known economic importance which occurs in the state in small enough infestations to make eradication or containment possible; or is not known to occur, but its presence in neighboring states make future occurence in Oregon seem imminent.

"B" Listed: a weed of economic importance which is regionall abundant, but which may have limited distribution in some counties. 

"T" Listed: annually, a designeted list of weed species is selected that will be the focus for prevention and control by the Noxious Weed Control Program . Action against these weeds will recieve priority. Selected from the "A" or "B" weed list. 

For more information about Oregon's noxious weeds click  

To learn more about each county's weed control laws, click on your county's name:

Seeding in Baker County by Leading Edge Aviation 

Applying Open Range G for annual invasive grasses in Owsley Canyon in Union County

Treating spotted knapweed in Baker County by Tri-County staff

OWEB FIP Whitetop treatment project area in Baker County 

Wallowa Whitman National Forest trip into Reds Horse Ranch to treat meadow hawkweed and other noxious weeds 

Seeding in Baker County by Leading Edge Aviation 

For a list of current contractors and their services in the local area click 

Noxious weed information booklet: 

Calibration Information: