Hydretain Root Zone Moisture Manager - 15lb GranularSupport your lawn through summer drought periods. Unique root zone moisture manager that effectively reduces the overall watering requirements of lawns, shrubs, trees, flowers, fruits and vegetables by as much as 50% or even more. Hydretain is not a wetting agent or a polymer gel. It is a blend of hygroscopic and humectant compounds that convert moisture vapor in the soil into water droplets that plants can use. This process improves water and