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 current 25 Noxious Weeds found in Blaine County, click the name to be taken to ISDA information sheets that contain more information and a variety of photos: 

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