Restricted-use Herbicides in Idaho, Oregon, and Washington
Andrew Hulting
Revised November 1, 2008
The herbicides listed below are designated as restricted-use by the U.S. Environmental Protection Agency (EPA); you must have a certified pesticide applicator’s license to buy them.
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
diclofop-methyl 
methyl bromide
paraquat
picloram
pronamide
Additional Restricted-use Herbicides 
Some or all uses of the following herbicide active ingredients are 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
benefin
bromacil
bromoxynil
carfentrazone
chlorsulfuron
clopyralid
copper sulfate
DCPA
dicamba
dichlobenil
dichlorprop
diflufenzopyr
diquat
diuron
ethametsulfuron
fenoxaprop
fluazifop
flufenacet
fluroxypyr
glyphosate
hexazinone
iodosulfuron
imazamox
imazapyr
MCPA
MCPB
MCPP
mesosulfuron
metam-sodium 
metribuzin
metsulfuron
MSMA
nicosulfuron
primisulfuron
prosulfuron
prometon
rimsulfuron
simazine
sodium chlorate
S-metolachlor
sodium metaborate
sulfometuron-methyl
sulfosulfuron
tebuthiuron
thifensulfuron
triasulfuron
tribenuron
triclopyr
trifluralin
triflusulfuron
2,4-D
2,4-DB