Sylva Grow Organic Growing Medium is a unique blend of fine bark (a by-product of sustainably managed British forests), green compost (a carefully sourced, certified ingredient) & coir & is based on a formula used by professional organic growers throughout the UK. It contains balanced organic fertilisers & seaweed meal for excellent vigour & disease resistance. Sustainable growing medium for gardeners who are passionate about the environment as their gardens. 100% peat-free compost for organic growing. Soil Association Approved. RHS endorsed.