Master Nursery® Bumper Crop® Organic Grower’s Mix is an incredibly, biologically diverse growing medium designed to increase budding and yield in all your container plants! It is carefully formulated using natural ingredients and proper composting methods that result in a consistent growing medium. Our exclusive recipe provides an ideal balance between water retention, soil texture, drainage, and aeration. Ingredients include: mycorrhizal fungi, kelp meal, lobster and crab shells, worm castings, sphagnum peat moss, perlite, dehydrated hen manure, coir, composted cow manure, aged bark, dolomitic lime, and Peruvian seabird guano. OMRI Listed for organic use.