Purple Starthistle, Centaurea calcitrapa

Impacts:

  • Crowds out native species
  • Grows and spreads aggressively
  • Unpalatable to wildlife and livestock
  • Threatens grazing capacity of rangeland

Other problematic invasive weeds:

Giant Reed (Arundo donax)

Salt Cedar (Tamarisk ramosissima)

Perennial Pepperweed (Lepidium latifolium)

Yellow Starthistle (Centaurea solstitialis)

Barbed Goat Grass (Aegilops triuncialis)

Tree of Heaven (Ailanthus altissima)