SubCulture, from General Hydroponics, is a revolutionary fifty-two soil microorganism blend that will increase vitality and yield in all plants. The unique microbial blend of Bacillus, Streptomycetes, Actinomycetes, Psuedomonas and Trichoderma fungi colonize in the root zone, and media, to form a symbiotic relationship with the plant. These organisms secrete natural growth hormones and enhancers that are available to the plant through the root zone. SubCulture means robust healthy plants with strong, healthy root systems that are resistant to environmental stresses.