-Gro 25 Qt. Moisture Control Potting Mix is specially designed to help you maintain the moisture balance for your container plants. This unique formula combines sphagnum peat moss, coir, and a wetting agent to allow the soil to absorb up to 33% more water than regular soil, giving your plants the chance to grow twice as big. It provides essential nutrients that feed your plants for up to six months, making it i for both indoor and outdoor potted plants.