There tends to be a debate often held by those who enjoy to spruce up their yards as to wither or not to clean up the leaves when they fall. However, for those not wanting to deal with this annual mess rest assured it is just fine to leave them where they lie. This because you can think of these leaves as free mulch and fertilizer to utilize in your garden and yard. Leaves form a natural mulch that helps suppress weeds and at the same time fertilize the soil as they break down. Simply let leaves lie where they fall or move them into your garden beds to protect your plants’ roots, suppress weeds, preserve soil moisture and eventually break down and return nutrients to the soil. The leaves of one large tree can be worth as much as $50 worth of plant food and humus. Pound for pound, leaves contain twice the mineral content of manure. The huge amount of organic matter they offer can be used to improve soil structure. But, if you truly wish to move them and have some other options to do with the leaves, here is a list of a few things you could try out.

Fall Leaves Options:

Make Leaf Mold

Composting sound like too much work? Then make leaf mold, much beloved by English gardeners. Simply rake the leaves into a big pile. If you shred them, they will decompose faster, but you can still make leaf mold without shredding. Keep the leaves moist let the fungi take over. After one to three years, the leaves will have disintegrated into a dark, sweet-smelling, soil conditioner that is high in calcium and magnesium and retains water. It’s exceptional as an amendment for veggie and flower gardens and a great addition for potting soils. See this video on how to make leaf mold.

Leave Leaves for Wildlife

Leaves aren’t just about being useful to us as humans. Fallen leaves also provide wildlife, especially pollinators, with some winter cover. Bees, moths, butterflies, snails, spiders, and dozens of arthropods and pollinators overwinter in dead plant material for protection from cold weather and predators. For example, the mated queen bumble bees burrow only an inch or two into the earth to hibernate for winter, relying on natural leaf litter to keep them insulated. Also, many butterflies overwinter as chrysalises or cocoons disguised as dry leaves. (Be careful when you throw away leaves!)

Let’s not rake, mow, and blow away a bit of nature that is essential to our natural web of life. Consider creating a leaf pile or two and allowing it to break down naturally. (Leave leaves whole; do not shred.) Leave leaves on your garden beds as mulch through the winter and don’t be in a rush to remove in the early spring. (Don’t worry; flowers have no trouble poking their heads through leaves.) Your butterflies and pollinators will thank you!

Protect and Store Root Vegetables

Leaves make a good insulating layer for cold-hardy vegetables and root crops stored in the ground—such as carrots, kale, leeks and beets. Cover them and you’ll be able to harvest all winter.

If you have a cool, humid spot, you can also store carrots, beets, and other root vegetables between layers of crisp, freshly fallen leaves. Sprinkle each layer of leaves with water (don’t let them get soggy). If you don’t grow your own vegetables, visit a farmers’ market and try to find a vendor who will sell you half a bushel or more of your favorite root crops.

Improve Your Soil

Mix shredded leaves right into your garden. Next spring, your soil will be teeming with earthworms and other beneficial organisms. Note: If you add shredded leaves right to the soil, add some slow-release nitrogen fertilizers to help the leaves decompose and to ensure that soil microbes don’t use all of the available nitrogen.

Create a Compost Pile

Make compost for a valuable soil amendment. If you are not already composting, now is a good time to start. Pile autumn leaves in the corner of your yard. Ideally, keep leaves from blowing away with chicken wire or some type of structure. To speed up composition, shred those leaves with a mulching lawnmower (or use a chipper or leaf shredder). 

Layer these carbon-rich “brown” leaves with high-nitrogen “green” material such a grass clippings, dead plant matter, and kitchen scraps. The “green” feeds the bacteria that will be doing all the work of breaking down the leaves. Layer three or four inches of old leaves with an inch of fresh grass clippings or other green, leafy yard waste. 

Then let the compost sit all winter, turning the pile occasionally to aerate it. If the compost pile starts to appear dry, spray it down with a garden hose and turn with pitch fork. By the time spring rolls around, you should have some nice compost to mix into your garden soil.

Mow Into Lawn

Researchers at Michigan State University have shown that lawns actually benefit from a thin layers of leaves. Leaf litter improves the soil, lessening the need for fertilizer in the spring. They recommend a mulching lawnmower with a blade 3 inches high and mowing once a week while the leaves are falling. This will break down the leaves into smaller pieces over the winter, providing your soil with nutrients. Older mowers can be converted to mulchers by installing a mulching blade.

So, don’t be a perfectionist! Leave leaf litter to feed worms, fungi, and soil bacteria. Just don’t leave thick layers of matted leaves on your lawn, as this blocks oxygen to the soil and invites disease.

Make Mulch

Leaves make an excellent protective mulch for vegetable crops, blueberries (and other berries), and ornamental shrubs. They not only suppress weeds and help retain soil moisture, but because they contain no weed seeds themselves, they won’t encourage the spread of new weeds.

We cover the beds in our vegetable garden with a layer of chopped leaves to keep the soil from washing away over the winter. Be sure to chop or shred leaves before using them as mulch. Whole leaves can form a mat that water can’t penetrate.

Leaves make a good insulating cover for overwintering tender perennials, too. The best time to mulch perennials is after the ground has frozen, so put aside shredded leaves in bags to use later in the fall. Leaf cover allows fall-planted garlic to root without sprouting, and prevents shallow-rooted strawberries from heaving during winter’s freeze-thaw cycles.

Have some FUN!

Source: Almanac, 8 Ways to Use Fall Leaves in the Garden