Soil is the natural grow medium for virtually every plant on the planet. It provides natural humates, and it is the natural habitat for friendly microbes and fungi. Many say that a natural soil grow creates a healthier and better tasting product. All our soils contain only natural derived ingredients such as peat and perlite etc. Please note: although all the soils we stock are inherently natural, they are not all certified as organic. However they are all suitable for natural biological (bio) gardening. Virtually all soils encourage friendly microbial activity in the root-zone. This increases yield and root health. For a really flourishing microherd we highly recommend using Ecothrive Neutralise (to avoid inhibiting, or even killing, the friendly microbes) plus a quality beneficial inoculant such as Ecothrive Biosys with organic grows. For an extra kick, try Ecothrive Charge too!