Market Access Certification and Inspection

Certified weed free hay and straw is in high demand in Oregon and throughout the western states. The Oregon Department of Agriculture (ODA) Weed Free Forage Program, as part of an integrated weed management approach, helps limit the spread of noxious weeds and protect Oregon agriculture.

Grower participation

Complete a request for crop inspection:

  • Submit the certification application at least 20 days prior to harvest.
  • The grower will be contacted for a field inspection.
  • Contact ODA 10 to 12 days prior to harvest.


  • Inspection fees: $60.00 per hour (4 hours minimum) or $3.00 per acre, whichever is greater.
  • Mileage fee: Inspector's travel will be charged at the current official state mileage rate.
  • Application fee: $25 for each field non-refundable.

Order NAWMA colored twine

After your field is certified, you may order North American Weed Management Association (NAWMA) purple and yellow twine from Continental Western Corporation (CWC). CWC will contact ODA to confirm your eligibility to purchase twine for the amount requested. 

  • Continental Western Corporation
    12021 NE Erin Way
    Portland, OR 97220
    Phone: 503-223-5194
    Fax: 503-223-6729
  • Bob Pollock, Vice President and Portland Branch Manager
    Phone: 503-223-5194
    Fax: 503-223-6729 
  • Kelly Dougherty, Sales
    Phone: 503-223-5194
    Fax: 503-223-6729
    Cell: 503-410-0981 

Weed free forage providers

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Weed Free Forage Certification Pilot Program

Weed Free Forage Program authority and description Document

Weed Free Forage Certification Program Application for Inspection




Kevin Bailey
District Manager, Shipping Point Inspection, Salem District
Commodity Inspection
635 Capitol St NE
Salem, OR 97301
Phone: 503-986-4666
Fax: 503-986-4737