The “Dirty Dozen”

The “Dirty Dozen”

Of the 47 listed noxious weeds in Nevada, 12 are particularly troublesome in the Truckee Meadows. Many of them are perennials, or plants that grow back from the roots each year. Click on their names to view their descriptions and photos.

For more information, download the following publications from the University of Nevada Cooperative Extension website:

  1. Identification of Knapweeds and Starthistles in Nevada
  2. Identification of Thistles in Nevada

Canada Thistle

Dalmatian Toadflax

Hoary Cress


Musk Thistle

Perennial Pepperweed/Tall Whitetop

Purple Loosestrife

Russian Knapweed

Scotch Thistle


Spotted Knapweed

Yellow Starthistle