Growmix is a mix of the finest, carefully selected types of peat. The addition of various types of fibre and perlite results in a lightness and oxygen level found only in Plagron quality substrates. The abundant presence of unique Plagron worm castings ensures vigorous plant growth and increased water retention. The nutrients that have been added to the Growmix consist of a carefully selected combination of fertilisers which meet all the needs of the plant during the first three weeks. Growmix is the perfect base for optimum growth and blooming and delivers the quality Plagron has been supplying for years. Growmix produces the highest yields when used with Plagron Terra Grow, Terra Bloom and the additives from Plagron. Growmix: also available without perlite.