The best size for a compost pile seems to be between 3 feet tall by 3 feet wide by three feet deep (3' x 3' x 3') and 5' x 5' x 5'. If it is any smaller, it tends to dry out too quickly. Larger piles are difficult to turn and keep evenly moist, and usually lack the air movement needed for decomposition. For more handy information on home composting, visit the eXtension web site: Soils and Composting: Composting.
