The best bulk potting soil available! Aged bark fines, pumice, blend of yard debris compost and chicken manure compost, peat moss, perlite, coconut coir, forest wood biochar, earthworm castings, limestone (for pH control), volcanic rock dust, fish bone meal, bat guano, dried poultry manure, alfalfa meal, feather meal, kelp meal, leonhardite, and mycorrhizae.