Bloom Stage Microbes are a specific group of beneficial bacteria and fungi formulated specially for the flower/bloom stage of plants. This variety of Microbes is designed to promote nutrient availability and plant protection during the bloom stage.ÊInoculate flowering and fruiting plants with the highest CFUÕs 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!