ColonyX is the most concentrated microbial inoculant in the world that helps build strong roots, protect the rhizosphere and optimize growth media. ColonyX contains billions (10-20 BILLION!!) of diverse microbes per ml of liquid solution. The diversity of hundreds of strains of natural soil microbes--bacteria, fungi and protozoa--guarantees rapid population and productivity of your root zone. ColonyX is homebrewed in-house by our staff Ph.D chemists in the USA with domestically sourced ingredients.