The Sill’s Potting Supplies Trio is here for all your potting needs. It includes one 1.5 pound bag of each of the following: Organic Potting Mix, Organic Cacti Mix, and Lava Rocks. Each potting mix bag can be used to pot 2-3 small 4" plants. All natural. Potting mix ingredients: compost, pine bark, coir, worm castings, perlite. Cacti mix ingredients: biochar, expanded shale, rice hulls, compost, worm castings, sand, coir. Lava rocks ingredients: just lava rocks.