The Sill’s Organic Cacti Mix is here for all your potting needs. This well-draining soil is great for succulents such as cacti. Be sure to pack tightly when repotting and water after.Can be used to pot 2-3 small 4" plants. All natural. 1.5 pound bag. Ingredients: biochar, expanded shale, rice hulls, compost, warm castings, sand, coir.