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La Plata County
Weed Web Site
2500 Main Avenue
Durango, CO 81301
Enforceable Weeds
Absinth wormwood
Black henbane
Bull thistle
Canada thistle
Cypress spurge
Diffuse knapweed
Houndstongue
Musk thistle
Myrtle spurge
Oxeye daisy
Perennial pepperweed
Plumeless thistle
Scotch thistle
Spotted knapweed
Yellow toadflax
Potential Invaders
African rue
Camelthorn
Dyers woad
Meadow knapweed
Mediterranean sage
Orange hawkweed
Plumeless thistle
Rush skeletonweed
Sericea lespedeza
Squarrose knapweed
St. Johnswort
Yellow hawkweed
Yellow starthistle
Native Poisonous
Larkspur
Purple Locoweed
Twogrooved
Western Waterhemlock
Western Whorled Milkweed
White Locoweed
Native Wildflowers
Calypso bulbosa
Glacier lily
Lady slipper
Wild clematis
Wood lily
Yellow Lady slipper
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Local Applicator List
Articles
Aminopyralid and Clopyralid Absorption and Translocation in Canada Thistle (Cirsium arvense)
Canada Thistle Control with Aminopyralid in Range, Pasture, and Non crop Areas
Video Series
(Informational)
San Miguel River threatened by invasives, SW Colorado
Defending our Favorite Places, USFS Invasive Species Program
Mussels threaten Lakes, Idaho
Invasive's documentary, Great Lakes Michigan
Invasive species effects, SW Nebraska