Soil Moist polymer granular is a soil amendment designed to reduce plant waterings by 50%, reduce transplant shock and soil compaction, and will remain effective in the soil for 3-5 years. It is an inexpensive form of insurance for the plant and is environmentally friendly. Soil Moist saves time, labor and plant loss. It is ideal for containers, baskets, flower beds, window boxes, trees, shrubs, turf and perennials.