Roots Organics B2 Professional Growing Mix - 2 PackRoots Organics B2 Professional Growing Mix can act as a direct planting media or be used as the perfect base mix. Well balanced between water holding capacity and drainage, B2 is designed for absolute consistency and control. The blend is composed of outstanding ingredients, which guarantees excellent performance as a primary media or as a foundation for any of your custom mixtures. The enhanced drainage and increased organic content encourages vigor