One of the best features of worm castings is you can use as much as you want without the fear of burning tender young plants as other fertilizers are known to do. Unlike other animal manure and artificial fertilizers it is absorbed very easily and almost instantaneously by plants. The amazing thing is, that while the nutrients are easily available they are at the same time naturally endowed with a slow release feature, causing the nutrient benefits to last up to 2 months! This benefit is put in place during the digestion process of the earthworm. As the organic matter passes through the alimentary canal of the worm, a thin layer of oil coats the material, later eroding over a period of 2 months. The best of both worlds, immediate and long-lasting benefits! Ordinary composts do not have this benefit, they are placed in the garden to enrich the soil and plants, the available nutrients are quickly leached into the soil as soon as rainfall occurs or irrigation systems are turned on. Vermicompost provides a time-released benefit, slowly nurturing the plants over a greater length of time!