Beneficial bacteria has a symbiotic relationship with your plants. Plants release exudates from the roots, which feed microbes that in turn break down minerals and other materials so they are absorbable by your plants root system. Soil growers will find healthy microbiology imperative to successful growing. Many soil grower's will enhance the microbiology in the soil using compost teas and compost, while hydroponic grower's often prefer bottled concentrated microbes. Whatever your grow style it is likely to benefit from these beneficial relationships available from beneficial bacteria.