NPK RAW Microbes Bloom Stage 25lbs: Bloom Stage MICROBES are a specific group of Beneficial Bacteria and Fungi formulated specially for the Flower/Bloom Stage of plants. Inoculate flowering and fruiting plants with the highest CFUs on the market! All RAW Microbes are Double Tested, both the individual culture/species as well as the Final Blend. We test twice to ensure accuracy and viability!