Restricted-use Herbicides in Idaho, Oregon, and Washington

Andrew Hulting
Revised: 
March 2017
Revision notes: 
Reviewed March 2019

The active ingredients listed below are designated as restricted-use by the U.S. Environmental Protection Agency (EPA); buying them requires a certified pesticide applicator’s license.

Herbicides are listed by the active ingredient. Some or all uses of these active ingredients are considered restricted-use. Before purchasing any pesticide, consult the label for usage category.

acetochlor

acrolein

alachlor

atrazine

metam-sodium

paraquat

picloram

pronamide

Additional Restricted-Use Herbicides in PNW States

Some or all uses of the following herbicide active ingredients are classified as restricted-use in one or more of the three PNW states in addition to the federal restricted-use pesticides listed above. Before purchasing any pesticide, consult the label for usage category and site.

All aquatic uses of herbicides in Washington

All sulfonylurea herbicides in Washington

2,4-D

2,4-DB

benefin

bromacil

bromoxynil

carfentrazone

chlorsulfuron

clopyralid

copper sulfate

DCPA

dicamba

dichlobenil

dichlorpropene

diflufenzopyr

diquat

diuron

ethametsulfuron

fenoxaprop

fluazifop

flufenacet

fluroxypyr

fluthiacet-methyl

glyphosate

halosulfuron

hexazinone

iodosulfuron

imazamox

imazapic

imazapyr

MCPA

MCPB

MCPP

mesosulfuron

metribuzin

metsulfuron

MSMA

nicosulfuron

phenmedipham

primisulfuron

prometon

prosulfuron

rimsulfuron

simazine

S-metolachlor

sodium chlorate

sodium metaborate

sulfometuron-methyl

sulfosulfuron

tebuthiuron

thiencarbazone-methyl

thifensulfuron

triasulfuron

tribenuron

triclopyr

trifluralin

triflusulfuron