Brunnings Sphagnum Moss is a natural, organic material with fantastic moisture retention properties for your hanging baskets. Sphagnum Moss is usually dried and sterilized after harvest. It is a very popular soil amendment because of its ability to help sandy soil hold moisture, and helps clay soil loosen up and drain better. Because it has a naturally low pH of about 4.0, it is also an excellent soil amendment for acid-loving plants or highly alkaline areas. An ideal decorative top dressing for all pots. Helps retain water and nutrients in pots & baskets. Creates an attractive surface mulching for hanging baskets and potted plants. Suitable as backing for stag-horns, elk horns and orchids This 150g block expands up to ten litres.