We sell both P4 granules and P4 root dip water retaining gel products. Root dip is perfect for bare root plants in order to prevent the roots from drying out. P4 granules are a safe granular additive for soil and compost which can absorb 100s of times its own weight of water. This product acts like swell gel, storing water in the medium surrounding the plants roots and is perfect for tree or shrub planting. A variety of weights are available to purchase in both of these products including 2kg, 10kg and 25kg. If you have any further questions regarding our Water Retention Gel, availability and maintenance, please contact our team.