Tricoderma and endo- and ectomycorrhizal fungi spores are the special ingredients in all-natural Plant Success Granular. These beneficial fungi combine with kelp meal, humus, vitamins and amino acids to encourage spore germination. Plant Success Granular improves soil structure, enhances root development and assists with nutrient and water uptake and retention. The result is stronger, healthier plants and increased overall yields. Use Plant Success Granular at a rate of five pounds to one cubic yard of soil for best results.