Zoom Grow (Bioblend). Composted Bark, Peat, Chicken Manure, Pig Manure and Straw. Perfect for feeding the garden with rich organic matter to increase soil quality, nutrient uptake and water holding capacity. Zoom Gro can be mixed into or spread over gardens.  It is subjected to high-temperature sterilisation, so it is completely free of any weed seeds, pests or diseases.