Composting is an ancient technique that has been rediscovered by today's gardeners. Compost is made by layering brown organic materials (mostly dried leaves) and green materials (grass clippings, kitchen scraps, yard prunings). It is stored in a bin or left in a pile on the ground and stirred occasionally to add air. After a year or so - the amount of time depends on the size of the pieces you put in and how often you mix it - the result is finished compost that can be added to garden soil or used for mulching planting beds. Compost is full of nutrients and free of chemicals, costs nothing to make, and saves tax dollars by reducing the amount of garbage and recycling.