Cactus & Succulent Potting Mix Packaging: 5 kilos ACTIVE INGREDIENTS 70% Pumice 30% Organic Masitera Potting Mix is a ready to use soil-less medium specifically formulated for cacti and succulent that provides needed drainage and holds just the right amount of moisture allowing cacti to flourish while encouraging maximum root development. Our ready to use mix is optimized at a pH level and contains over 28 vital trace elements and minerals that are essential for rapid growth.