Wonder Soil Contains 18 wafers, totaling more than 10 lbs. of potting mix Soil-less medium - Mix of coconut coir, peat moss, nutrients, and water-absorbing polymers These special biodegradable polymers store and release water as needed for healthier plants and less watering Recommended for containers, cuttings, or adding to planting holes to reduce watering Each wafer expands to fill a 4-5 inch pot