This endo mycorrhizal product is OMRI listed and registered with the CDFA as an Organic Input Material. It contains a blend of nine top types of Endo mycorrhizal spores – Glomus aggregatum, G. etunicatum, G. clarum, G. deserticola, G. intraradices, G. monosporus, G. mosseae, Gigaspora margarita, and Paraglomus brasilianum. Our spore count guarantee is a minimum of 50 spores per cubic centimeter. This is a general-purpose inoculant for all Endo-dependent plants, including most vegetables, grapes, fruit trees, berries, turfgrass, and flowers. It can be dusted on transplant roots, blended into potting soils, worked into soil before seeding, or scattered on lawns and flower beds. For garden row crops, such as corn or beans, apply 1 teaspoon per linear foot and work into top 2-4 inches of soil before seeding, or work a half-teaspoon of inoculant into soil under larger seeds, such as melons or squash. Dust a half teaspoon on transplants such as tomatoes, peppers, or bedding flowers. For potting soil mix 1 lb. per cubic yard or 2 tablespoons per cubic foot.