When all the pretty leaves fall from the trees this fall, instead of bagging them to put out on garbage day, use them in your garden as free mulch. Most leaves, with the exception of oak leaves, break down easily over the winter. They add nutrients and humus to the soil in your gardens.
If you do not have a leaf mulcher like I do, you can break (mulch) the leaves up by running them over with your lawn mower while they are still on your lawn. Then rake the debris onto your garden between the plants. Your soil and plants will love it.