After you have harvested all of your veggies for the year, instead of composting your end of the season organic matter, add it to your garden. With the soil still being warm, the material will decompose quickly, saving you the time of amending your soil in spring.
You can add any vegetable or plant material, along with grass clippings and leaves. You’ll want to chop up the larger pieces, such as tree leaves or garden residue. Lawn mowers with bagging attachments work well to shred this material and collect it in one operation.
Spread the organic matter to about 3” deep and work in the soil. The warmer days will quickly turn your garden refuse into black gold. Organic matter may be added every two weeks or so from September until the first weeks of December.