Noxious Weeds
Join a workshop on purple loosestrife, hairy willow-herb, yellow flag iris and other semi-aquatic and aquatic species where you'll learn about identification, biology, control methods, and mapping.
This training is presented by the Early Detection Rapid Response specialist, Emily McGrath of the Colorado Department of Agriculture, and Robert Walters and Ashley Rust of Colorado Parks and Wildlife (CPW) on June 17, 2025 from 12:30 p.m. to 3:30 p.m. in Broomfield.
Click here to register for this training.
Please Contact Emily McGrath with any questions, and we look forward to seeing you!
The aim of the Noxious Weed Program is to control noxious weeds, the non-native aggressive invaders that replace native vegetation, reduce agricultural productivity, cause wind and water erosion and pose an increased threat to communities from wildfire. We do this by preventing the introduction of new invasive species; eradicating species with isolated or limited populations and containing and managing those invasive species that are well-established and widespread.
To accomplish these goals the program coordinates the efforts of local, state and federal noxious weed managers; provides funding for local entities to carry out on-the-ground weed management projects; conducts education and outreach activities and supports similar local activities; and maintains close contact with neighboring states and counties to prevent the interstate spread of noxious weeds.
What's New
Join the Colorado Department of Agriculture and Colorado Parks and Wildlife on June 17, 2025, for a workshop on identifying, controlling, and mapping destructive aquatic invasive species. View the Events Page for more information.
The second 2025 Noxious Weed Advisory Committee Meeting will be held in Steamboat Springs on June 11th. Visit the NWAC Events Page for more information.