Noxious Weeds
What's New
The Colorado Department of Agriculture's offices will be closed on Thursday, December 25th, and Friday, December 26th, in observance of the holidays.
The Noxious Weed Advisory Committee (NWAC) is seeking applicants for four open positions. Apply here by Wednesday, December 24,2025, or visit the Noxious Weed Advisory Committee Page for more information.
Thank you to everyone who applied for the now-closed 2026 Noxious Weed Annual Grant Cycle; the Grants Review Committee is reviewing submissions, and award decisions are expected around Friday, February 13th.
Colorado's Noxious Weed Program
Noxious weeds are aggressive, non-native plants that pose a serious threat to Colorado's natural landscapes and agricultural areas. They outcompete native vegetation, reduce crop yields, contribute to soil erosion, and increase the risk of devastating wildfires. Our Noxious Weed Program is dedicated to controlling these invasive species and protecting our state's valuable resources.
Our Approach to Weed Management
We employ a comprehensive strategy to combat noxious weeds, focusing on:
Prevention: Stopping new invasive species from establishing in Colorado.
Eradication: Eliminating isolated or limited populations of existing invasive species.
Containment & Management: Controlling and mitigating the impact of widespread, well-established invasive species.
How We Achieve Our Goals
To accomplish these critical objectives, our program works collaboratively by:
Coordinating Efforts: Bringing together local, state, and federal noxious weed managers.
Providing Funding: Offering financial support for local, on-the-ground weed management projects.
Education & Outreach: Conducting and supporting activities that raise awareness and educate the public about noxious weeds.
Interstate Collaboration: Maintaining close contact with neighboring states and counties to prevent the spread of noxious weeds across borders.