May increase micronutrient uptake by plants Down To Earth’s Granular Humic Acids is a highly concentrated source of humic substances that is ideal for use on fields, turf and vegetable gardens. Carefully mined from one of the world’s richest deposits, DTE Granular Humic Acids is derived from the ancient remains of decomposed organic plant materials. Naturally occurring, unaltered oxidized lignite, DTE Granular Humic Acids are crushed, screened and graded to a particle size of 1-3mm. CONTAINS NON-PLANT FOOD INGREDIENTS: Active Ingredients 50% Humic Acids Derived From Leonardite 50% Inert Ingredients Listed by the Organic Materials Review Institute for use in organic production.