PRO-MIX® HP® BIOFUNGICIDE™ + MYCORRHIZAE™ is perfect for growers that require a growing medium with good drainage, high air porosity and low water retention. The combination of fibrous Sphagnum peat moss and a high percentage of coarse perlite makes this formulation ideal for growers who require a growing medium product that is adapted to their needs for watering flexibility and crop seasonality. PRO-MIX® HP® BIOFUNGICIDE™ + MYCORRHIZAE™ contains Bacillus, a bacterium that reduces the incidence of certain root diseases, and mycorrhizae, a beneficial endomycorrhizal fungus that improves plant growth.