Introducing the Drainage Expert we truly need in our lives, the Lazy Gardener Pumice Stone. Pumice is a natural, unprocessed 100% organic product that doesn’t decompose or blow away easily. It also continuously maintains the soil structure. It is ideal for all houseplants, seeds, succulents and cacti. It stimulates the growth of good bacteria & worms in the soil. It provides excellent drainage and increases water retention for plants.