Restricted-use Herbicides in Idaho, Oregon, and Washington

Andrew Hulting
Revised: 
March 2016

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