Plagron Grow-mix is a blend of the finest, and carefully selected types of peat. It contains various types of fibre, making it light and with an oxygen level you would expect from a quality substrate like Plagron. The generous amount of Plagron worm compost ensures vigorous plant growth and better water retention.The nutrients added to Plagron Grow-mix consist of a carefully selected combination of fertilizers that cater for all the plant's needs during the three first weeks.