The special cactus mix combines pumice, earthworm castings, compost and forest humus to provide the perfect soil structure and drainage for all types of cacti, bromeliads and succulents. Black Gold cactus mix is the first step in creating your own garden oasis. | Sun Gro Black Gold 0.07-0.0-0.0 Succulent and Cactus Potting Mix | Size 8 qt