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Leaf removal isn’t always necessary, and what you should do with leaves in your yard depends on the number of trees you have. Leaving a small amount of leaves to decompose on your property can add nutrients to the soil and help grass, plants, and trees thrive. However, large accumulations of leaves can promote mold and fungal growth, so you should do at least two fall cleanups if you have many trees on your property.

Generally, it is not necessary to remove old mulch before applying a new layer. As organic mulch breaks down, it enriches the soil with nutrients. However, you should remove the old layer if it shows signs of fungus or disease, which can be common in moist areas, or if the total depth is already too thick. Avoid letting the total mulch depth exceed 3 inches, as this can harm plant roots. If you do remove old, disease-free mulch, it can be added to a compost pile.

There are several ways to decompose yard waste quickly. The first step is to move all debris into a compost bin or pile. From there, microorganisms, bacteria, and insects will break down the yard waste into compost. To speed things up, shred the waste into smaller pieces, add live worms to the pile, or introduce nitrogen-rich compost accelerators like grass clippings, coffee grounds, and manure. Turn the compost over every few days. This process, called aerating, allows oxygen to get in and accelerate decomposition.

If you want to take the decomposition process into your hands to speed it up, water and sunlight are key. Of course, you can’t control sunlight yourself, but you can rake leaves into piles in sunny spots in your yard. In terms of using water, you can also moisten the decomposing leaves with water, whether by pouring some from a watering can from time to time or using a hose to moisten them.