At this time of the year, fallen leaves are everywhere?and they?re a great, inexpensive source of organic material for enriching your garden soil. Leaves should be shredded to help them break down in the soil more quickly. If you don?t have a leaf shredder, rake leaves into long, low piles and then run your lawn mower back and forth over them. Some communities even offer composted leaves to residents free of charge, so check with your local government offices to see if you can take advantage of that wonderful resource.