Sphagnum Peat Moss professionally mixed with 20% peat free compost to balance pH at 6.8 and tested extensively to ensure the quality and pH are steady. A very light and airy consistency perfect for potted plants and larger containers. It has a excellent water retention properties. Sphagnum Peat moss is specified in most living soil recipes but is difficult to obtain in the UK due to high natural acidity. We've sorted that issue by using a percentage of alkaline compost to raise pH.