Bio dress is refined to 4mm and in a class of its own. Its main applications are for reinvigorating tired turf, top dressing sports fields, golf courses and bowling greens. It combines a specially selected sport sand and 4mm compost; it can be individually formulated to customer's specification or purchased at a standard mix combination. Bio Dress also contains many qualities to improve re-potting and support your growing plants. It natural disease suppressant qualities helps to produce lush green foliage and Improved grass swards It also stops nutrient leachating from the soil, aids good root formation and improves microbial content within the soil.