Pro Mix, 20 CUFT, Ultimate All Purpose Mix, Compressed Bale, Expands To 40 CUFT, Suitable For All Indoor Outdoor Planting Applications, Contains A Specially Formulated Starter Fertilizer, Formulated For A Wide Range Of Plant Species, Components Canadian Sphagnum Peat Moss, Peat Humus, Perlite, Limestone, Starter Fertilizer, Wetting Agent, Mycorrhizae Premier Tech, A Natural Plant Stimulant Which Assists Plants With Nutrient Water Uptake For Improved Plant Growth Resistance To Stresses