Roots Organics Formula 707 is a ready-to-use soil created for a special kind of gardener, those who want to control their own destiny. Formula 707 is different from the other growing mixes created by Aurora Innovations. It was designed with greater water-holding capacity, fewer nutrients, less perlite and less pumice, and it contains ingredients specific to large container gardening. In fact, the packaging is a 30-gallon grow bag containing about 20 gallons of the finest quality potting mix. Just punch holes in the bottom, cut off the top and plant.