Aabaco Environmental Water Storing Polymer Crystals help prevent over and under watering of plants. They are perfect for indoor and outdoor plants. The crystals reduce water stress in plants to help protect them from heat and prevent drought. Just add to potting mix or add to soil in a garden bed to increase the water holding capacity of the soil. Water crystals act like a sponge making the crystals swell and increase in size. They will retain the water and release when needed giving your plants the right amount of water to thrive and keep them growing. Our water storing crystals are available in a variety of sizes to fit your budget and needs.