Sherman County Soil and Water Conservation District
“C” CLASS – LOW PRIORITY. A noxious weed which is wide spread throughout the County and has known economic impacts.
Common Rye, Secale cereale
Field Dodder, Cuscuta campestris
Jointed Goatgrass, Aegilops cylindrical
Klamath Weed (St. Johnswort), Hypericum perforatum
Little Bur (Bur Buttercup), Ranunculus testiculatus
Marestail, Contza Canadensis
Medusahead Rye, Taeniatherum caput-medusae
Perennial Pepperweed, Lepidium latifolium
Prickly Lettuce, Lactuca serriola
Puncturevine, Triulus terrestris
Quackgrass, Elytrigia repens
Spiny Cockelbur, Xanthium spinosum
Waterhemlock, Western Cicuta douglasii
Wavyleaf Thistle, Cirsium undulatum
“A” CLASS – HIGH PRIORITY. Any noxious weed which greatly endangers the overall economic well-being of the County and has a small enough distribution where eradication is possible.
Jimsonweed, Datura stramonium
Spikeweed, Hemizonia pungens
“B” CLASS – MODERATE PRIORITY. A noxious weed which is well established in the County and has known negative impacts, but due to its distribution, eradication is not feasible.
Scouring Rush, Equisetum laevigatum
Wild Oat, Avena fayua
