Miracle-Gro Expand 'n Gro 0.33 cu. ft. Concentrated Planting MixGreat substitute for garden soil or potting mix Can be used in ground or in containers (see label for instructions) Grows up to 3X bigger plants than native soil and feeds up to 6 months Holds up to 50% more water than basic potting soil Expands up to 3X when water is added and creates up to 90% more air space in native soil Expands up to 3X when water is added and grows up to 3X bigger plants than native soil Holds up to 50% more water than basic