Miracle-Gro Moisture Control Potting Mix, 16-Quart (0.53-Cubic Feet) Grows Plants Twice as Big! vs unfed plants Feeds up to six months Protects against over- or under-watering Absorbs up to 33% more water than basic potting soil vs potting soil that does not contain sphagnum peat moss, coir and wetting agent Helps beautify potted flowers, indoors and out