Cow Manure Organic Compost Fertilizer Plant Growth Natural Dried Pure Dung Media Composting cow manure has several benefits. In addition to eliminating harmful ammonia gas and pathogens (like E. coli), as well as weed seeds, composted cow manure will add generous amounts of organic matter to your soil. By mixing this compost into the soil, you can improve its moisture-holding capacity. This allows you to water less frequently, as the roots of plants can use the additional water and nutrients when needed. Additionally, it will improve aeration, helping to break up compacted soils. l Manure can be mixed with soil and plants can be planted.l Manure can also be added from the surface of the soil to a grown plant ConditionA brand-new, unused, undamaged item.