sun gro BLACK GOLD Cactus Mix, Net Content: 8 qt, Compositions: Horticultural Grade Perlite, Pumice or Cinders, Earthworm Castings, Compost, Bark, 1 cu-ft Coverage AreaAn ideal rapid draining growing mix for succulent plantsIt’s balanced blend of bark, compost, worm castings and perlite or pumice or cinders encourages vigorous growth while ensuring ample aeration and drainage that most cacti, bromeliads and succulents require to thrive