Where can I buy potting soil for organic gardening?
Potting soil, soil amendments, fertilizers, and pesticides/herbicides are not certified organic. These types of products are “approved for organic production” by agencies like the Organic Materials Review Institute or Washington State Department of Agriculture, who certify products to be allowed for use in organic production. Each product or material is scrutinized by an independent organization like OMRI to ensure that it meets standards for organic production and includes approved ingredients.