Find Your Local Certified Weed Free Forage or Gravel

The NAISMA Weed Free Products program is the only program in North America that maintains a list of standards that provide land managers assurance that noxious weeds will not be spread through the movement of forage, hay, mulch, or gravel brought in to the property.

The Weed Free Products program provides guidelines for the minimum requirements of certifying forage, gravel, and mulch products; and ensures uniform training and participation in the program.

The Weed Free Product standards are designed:

  • to provide some assurance to all participants that forage, gravel, and/or mulch certified through this program meets a minimum acceptable standard.
  • to provide continuity between the various provinces and states in the program.
  • to limit the spread of noxious weeds through forage, mulch, and gravel.

Many federal, state, and local lands require the use of certified weed free forage and gravel on their properties. Partnering agencies are welcome to include additional species and standards to their own programs. MOU holders are simply required to meet the minimum standards as described. 

Click here for more information for agencies and inspectors.

Find Your Local Weed Free Product Agencies across North America

The following States and Provinces are in accordance with North American Weed Free Forage Standards.
Click on the links below to go directly to the agency websites:

*California Counties – Forage Only

Siskiyou County
Contacts: Sherry Lawson, James Smith
Email: ,
Phone: (530) 841-4111

Inyo – Mono Counties

**Montana Counties – Gravel Only

Missoula County Weed District
Contact: Bryce Christiaens
Phone: (406) 258-4217 

Carter County Weed District
Contact: Jesse Scott
Phone: (406) 775-6278 

Weed Free Product Inspectors receive a discounted membership