Farm-Fos Ltd Tom Nellist, Builth Farm, Eau Withington , Hereford , HR1 3NQ United Kingdom About Solutions products Downloads Companies Farm-Fos Ltd Products TwinN - Fertiliser Nitrogen for Natural Growing TwinN - Fertiliser Nitrogen for Natural Growing 0 Share Natural alternative to fertiliser Nitrogen. New N-fixing microbes. Approvedin organic farming. Available in 1 and 5 ha packs. Most popular related searches organic growing organic farming nitrogen fertilisation Customer reviews No reviews were found for TwinN - Fertiliser Nitrogen for Natural Growing. Be the first to review! Add your review Publish your review Great! review successfully added!