Whitman County
WWW Whitman County


(509) 397-4622


400 N. Main Street

Colfax, 99111

Please see a

department’s individual

page for department

specific contact


Below are some of the problem weeds for Whitman County

bullbush Canada Thistle Musk thistle Scotch Thistle Diffuse Knapweed Russian Knapweed
Bull Thistle

Canada Thistle

Musk Thistle

Scotch Thistle

Diffuse Knapweed

Spotted Knapweed

Rush Skeletonweed Whitetop Common Tansy Yellow Toadflax St. Johnswort Poison Hemlock

Rush Skeletonweed

Whitetop/Hoary Cress


Yellow Toadflax

Saint Johnswort

Poison Hemlock
Houndstongue Dalmatian Toadflax Spotted Knapweed Yellowstar Thistle Leafy Spurge Kochia


Dalmatian Toadflax

Russian Knapweed Yellowstar Thistle Leafy Spurge Kochia
Click on an image to enlarge

Peggy Wright, Coordinator Email
East 111
Upton Street
Phone: 509-397-6261
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