Bush Doctor® Microbe Brew® is a liquid microbial inoculant with a complex blend of ingredients specially formulated to help plants achieve enhanced root efficiency and nutrient uptake. Microbe Brew® encourages rapid microbial colonization at the root zone and can be used in both hydroponic and soil applications. Use Microbe Brew® on your ornamental flowers, evergreens, vegetables, and trees. for best results, follow the FoxFarm feeding schedule.