Wonder Soil is a revolutionary instant potting mix wafer. Just add water and each compressed wafer expands to fill a 5” pot with clean, pest-free soil. One tube of 18 Wonder Soil wafers makes up to 15 pounds of potting soil and is much lighter and cleaner than traditional bags of soil. This proprietary formula of coir, peat, potassium polymers and nutrients promotes a stronger root system and reduces watering up to 50%.