Soil Moist Plant Paks are designed to reduce plant watering. The water-storing polymers in the biodegradable bag absorb water similar to a sponge. When water is absorbed, the Soil Moist polymers expand, break open the paper bag and spread throughout the plant's soil. When the soil dries, the stored water is released to the soil and plant roots over an extended period of time. Soil Moist is non-toxic, environmentally friendly and safe to use on all plants and vegetables. Soil Moist Plant Paks will reduce plant waterings by 50% and last several seasons. Use Soil Moist Plant Paks for larger plants, trees and containers-10" and up. Six .07oz packets