Washington State Organic Input Material List

The WSDA Organic Input Material List includes a list of all materials that we have reviewed and approved for use in organic agriculture. This list is typically updated quarterly. Materials on this list have been reviewed by WSDA organic staff and are approved for use in organic agriculture.

The National List of Allowed and Prohibited Substances

The National List of Allowed and Prohibited Substances identifies generic substances that may and may not be used in organic crop and livestock production. It also lists the substances that may be used in or on processed organic products.

Organic Materials Review Institute

The Organic Materials Review Institute (OMRI) supports organic integrity by developing clear information and guidance about materials, so that producers know which products are appropriate for organic operations. OMRI is a 501(c)(3) nonprofit organization that provides an independent review of products, such as fertilizers, pest controls, livestock health care products, and numerous other inputs that… Continue reading Organic Materials Review Institute