Composting: Fall Leaves11.19.21An unattended pile of leaves may take two to three years to decompose! So take a look at some tips for composting your fall leaves! - Fall leaves are a valuable resource because they keep garden soil productive. By following a few tried and true composting techniques, you can optimize fall-leaf composting.- The minimum size for compost bins is three feet by three feet by three feet. Bins larger than six feet across may restrict oxygen infiltration and slow decomposition.View Article