
Materials such as grass clippings (untreated), leaves, old mulch and straw are some examples of organic matter that can improve the soil. Shred large materials using a mower or other tool so they will decompose more quickly. Spread a layer about three-inches thick over the surface of the garden. Till or dig in the organic matter on a day when the soil is not saturated. Warm weather will expedite decomposition and this process can be repeated every other week into November or December when the cold slows decomposition significantly. (Cynthia Domenghini)