Organic Fertilizers are fertilizers derived from animal matter, animal excreta(manure), human excreta and vegetable matter(e.g. compost and crop residues). Soil with lots of organic material remains loose and airy, holds more moisture and nutrients, causes faster growth of soil organisms and promote healthier plant root development. Naturally occurring organic fertilizers include animal wastes from meat processing, peat, manure, slurry and guano. Organic agriculture a system of farming, allows for certain fertilizers and amendments and disallows others. If only chemicals are added then the soil gradually loses its organic matter and microbiotic activity. As this material is used up, the soil structure deteriorates, becoming compact, lifeless and less able to hold water and nutrients. These things result in increased amount of nutrients to feed plants. Many organic materials serve as both fertilizers and soil conditioners. They feed both soil and plants. These products are made from natural plant and animal materials or from rock minerals. For organic gardeners, creating a living soil rich in humus and nutrients is the key of growing great fruits and vegetables, abundant flowers and long-lived ornamental trees and shrubs. The overall fertility and viability of the soil is heart of organic gardening but like all gardeners, organic gardeners have to start somewhere. Your soil may be deficient in certain nutrients. It may not have excellent soil structure. Its pH may be too high, or too low. You need to work to make it ideal for gardening.