Weed Free Forage and Gravel

There is a growing demand for weed free forage and gravel in North America as a preventative program for the spread of noxious weeds. Many federal, state, and local lands require the use of certified weed free forage and gravel on their properties. The NAISMA Weed Free Forage and Gravel 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 or gravel brought in to the property.

The goal of the Weed Free Forage and Gravel program is to provide a guideline for the minimum requirements of certifying that forage, hay, and gravel are weed-free, and to ensure uniform training and participation of the  provinces and states in the program. The standards are designed:

  • to provide some assurance to all participants that forage 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 and mulch.

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 below.


How To Become a Weed Free Forage or Gravel Program Participating Agency

1. Download the relevant Memorandum of Understanding below. Choose from Weed Free Forage or Weed Free Gravel Program Documents below. You may participate in one or both. Have the authorized agency fill out, scan, and email to This email address is being protected from spambots. You need JavaScript enabled to view it. or mail to NAISMA, 2025 N. Lake Dr., Milwaukee, WI 53202

2. Identify who will participate in the Weed Free Forage training and have them contact This email address is being protected from spambots. You need JavaScript enabled to view it.. One representative from the authorized agency must attend the NAISMA Weed Free Forage and Gravel training at the Annual Meeting every 3 years or participate in an online training (to be launched by April 1, 2018).

3. MOU holder fills out the NAISMA membership form here

4. Individual inspectors certiying weed free forage or gravel for the MOU entity must take the NAISMA online training (coming soon) or the in-person training at the NAISMA Annual Meeting. The 2018 meeting will be a joint meeting with the Upper Midwest Invasive Species Conference, October 15-18, 2018.

The Weed Free Forage and Gravel Program Documents are listed below. 

Weed Free Forage Program Minimum Certification Standards

Weed Free Forage MOU

Weed Free Forage Inspection Form

Weed Free Gravel Minimum Pit Standards

Weed Free Gravel Pit Inspection Form

Weed Free Gravel  MOU

Weed Free Forage Brochure

Weed Free Forage and Gravel Training Presentation (Part 1)

Weed Free Forage and Gravel Presentation (Part 2)


States and Provinces in Accordance with North American Weed Free Forage Standards

AL: Southern Seed Certification Assoc. 334-693-3988 or This email address is being protected from spambots. You need JavaScript enabled to view it.

AK: http://plants.alaska.gov/invasives/weed-free-forage.htm

AB: http://www1.agric.gov.ab.ca/$Department/deptdocs.nsf/All/prm1325

AZ: http://www.arizonacrop.org/NWFF&M/Grower's%20list.html

CA: http://www.cal-ipc.org/ip/prevention/weedfreeforage.php

CO: https://www.colorado.gov/pacific/agconservation/weedfreeforage

IA: http://www.iowacrop.org/Weed_Free.htm

ID: http://idahoweedawareness.com/netcenter/library/weedfreeforage.html

IN: http://www.indianacrop.org/Field-Programs/Seed-Certification

IL: http://www.ilcrop.com/

KS: https://agriculture.ks.gov/divisions-programs/plant-protect-weed-control/certified-weed-free-forage-and-mulch-program

KY: https://pss.ca.uky.edu/extension/ksia//ky-weed-seed-free-hay-and-straw-program

MI: http://www.michcrop.com/

MN:  http://www.mncia.org/pages/noxious-weed-seed-free-forage-mulch

MT: http://agr.mt.gov/agr/Programs/Weeds/NWSFF/

MO: http://www.moseed.org/weedfreeforage.htm

NC: http://www.nccrop.com/ 

NE: http://www.neweedfree.org/ForageForSale.aspx

NM: http://seedcertification.nmsu.edu/certified-weed-free-fora.html

ND: http://www.nd.gov/ndda/program-info/weed-seed-free-forage-program/certified-weed-seed-free-forage-available-sale

NV: http://agri.nv.gov/Plant/Noxious_Weeds/Programs_Weed_Free_Certification_Certified_Weed_Free_Forage/

OH: http://ohseed1.org/noxious-weed-free-forage-mulch/

OR: http://www.oregon.gov/ODA/programs/MarketAccess/MACertification/Pages/WeedFreeForage.aspx

SD: https://sdda.sd.gov/ag-services/weed-and-pest-control/weed-free-forage/

UT: http://ag.utah.gov/divs-progs/50-plants-and-pests/hay-grain-seed/170-weed-free-hay-certification.html

WA: http://agr.wa.gov/PlantsInsects/WWHAM/WWHAM.aspx

WI: http://wcia.wisc.edu/2013ForageandMulchCertificationStandards.pdf

WY: http://www.wyoweed.org/weeds/weed-free-forage