Weed Identification

The State of Idaho has 67 different species of weeds. 51 of these species are terrestrial. The state categorizes Noxious Weeds into 4 different categories: 1) Statewide Prohibited Genera 2) Early Detection Rapid Response, 3) Control, and 4) Containment. A full list of Idaho Invasive Species can be found here.

Below is the list of the current 25 Noxious Weeds found in Blaine County,.

Black Henbane

Photo Credit: Jan Samanek, Phytosanitary Administration, Bugwood.org

Canada Thistle

Photo Credit: Jan Samanek, Phytosanitary Administration, Bugwood.org

Curlyleaf Pondweed

Photo Credit: Leslie J. Mehrhoff, University of Connecticut, Bugwood.org

Dalmatian Toadflax

Photo Credit: K.George Beck and James Sebastian, Colorado State University, Bugwood.org

Diffuse Knapweed

Photo Credit: USDA Agricultural Research Service, USDA Agricultural Research Service, Bugwood.org

Dyer’s Woad

Photo Credit: Joseph M. DiTomaso, University of California - Davis, Bugwood.org

Field Bindweed

Photo Credit: K.George Beck and James Sebastian, Colorado State University, Bugwood.org

Hoary Alyssum

Photo Credit: Catherine Herms, The Ohio State University, Bugwood.org

Houndstongue

Photo Credit: Mary Ellen (Mel) Harte, Bugwood.org

Johnsongrass

Photo Credit: James H. Miller, USDA Forest Service, Bugwood.org

Jointed Goatgrass

Photo Credit: USDA APHIS PPQ - Oxford, North Carolina, USDA APHIS PPQ, Bugwood.org

Leafy Spurge

Photo Credit: Chris Evans, University of Illinois, Bugwood.org

Mediterranean Sage

Photo Credit: Eric Coombs, Oregon Department of Agriculture, Bugwood.org

Oxeye Daisy

Photo Credit: Becca MacDonald, Sault College, Bugwood.org

Perennial Pepperweed

Photo Credit: Pedro Tenorio-Lezama, Bugwood.org

Perennial Sowthistle

Photo Credit: John Cardina, The Ohio State University, Bugwood.org

Poison Hemlock

Photo Credit: John Cardina, The Ohio State University, Bugwood.org

Puncturevine

Photo Credit: Steve Dewey, Utah State University, Bugwood.org

Rush Skeletonweed

Photo Credit: Steve Dewey, Utah State University, Bugwood.org

Russian Knapweed

Photo Credit: Steve Dewey, Utah State University, Bugwood.org

Scotch Thistle

Photo Credit: Bonnie Million, Bureau of Land Management, Bugwood.org

Spotted Knapweed

Photo Credit: Rob Routledge, Sault College, Bugwood.org

Vipers Bugloss

Photo Credit: Rob Routledge, Sault College, Bugwood.org

Hoary Cress

Photo Credit: Mark Schwarzlander, University of Idaho, Bugwood.org

Yellow Toadflax

Photo Credit: L.L. Berry, Bugwood.org