TCWP Website

Weed ID

Teton County Weed & Pest District created this page as a resource for finding information about weeds that are considered noxious for our area. Since a variety of weeds occur or threaten our area, we have created a way of prioritizing these weeds. These priorities may vary depending on area of the county and size of the infestation.

Priority 1: No tolerance, with a goal of eradication upon detection

Weeds in this category are considered by Teton County Weed & Pest to be highly invasive, pose the highest threat to native plant communities, are known to render land unfit for wildlife and livestock grazing, reduce land value and recreation, and are found or were previously found in extremely low numbers in Teton County. Early detection and rapid response along with noxious weed education will be used with a goal to eradicate these weeds.

Common Teasel	Cypress Spurge	Diffuse Knapweed	Dyers Woad	Leafy Spurge	Meadow Knapweed
Myrtle Spurge	Orange Hawkweed	Perennial Pepperweed	Plumeless Thistle	Purple Loosestrife	Rush Skeletonweed
Russian Knapweed	Salt Cedar	Scotch Thistle	Squarrose Knapweed	Yellow Hawkweed	Yellow Starthistle

Priority 2: No tolerance, aggressive control on all known infestations

Weeds in this category are considered by Teton County Weed & Pest to be highly invasive, pose a high threat to native plant communities, are known to render land unfit for wildlife and livestock grazing, reduce land value and recreation, and are found in low numbers in Teton County. Containment and reduction of current infestations, early detection and rapid response of new infestations, use of biological control measures, along with noxious weed education will be used to control, reduce numbers, and in certain circumstances eradicate

Absinth Wormwood	Common Burdock	Field Bindweed	Field Scabious	Russian Olive
Skeletonleaf Bursage	St. Johnswort	Sulfur Cinquefoil	Whitetop/Hoarycress

Priority 3: No tolerance of further spread from their established locations, control and maintenance of current weed infestations and aggressive control to areas otherwise free of these weeds.

Weeds in this category are established in large numbers in localized areas only. They are highly invasive, their further spread poses a significant threat to non-infested native plant communities, and they currently render land unfit for wildlife and livestock grazing, and reduce land value and recreation. Containment of current infestations through the use of best management practices and biological control, stopping further spread through early detection and rapid response of known non-infested areas along with noxious weed education will be used to maintain, control, and reduce weed numbers.

Black Henbane	Common Tansy	Dalmatian Toadflax	Hoary Assylum
Houndstongue	Oxeye Daisy	Spotted Knapweed	Yellow Toadflax

Priority 4: No tolerance of further spread, control and maintenance of current weed infestations.

Weeds in this category are established throughout Teton County in large numbers. They are highly invasive, their further spread poses a significant threat to non-infested native plant communities, and they currently render land unfit for wildlife and livestock grazing, and reduce land value and recreation. Containment of current infestations through the use of best management practices and biological control, stopping further spread through early detection and rapid response of known non-infested areas along with education will be used to maintain these weeds at there present level.

Bull Thistle	Canada Thistle	Common Mullein
Musk Thistle	Perennial Sowthistle	Scentless Chamomile