Why do we need to rake/bag up leaves? Wont they biodegrade on their own?
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Avid gardener here! Absolutely it will biodegrade eventually, but the speed at which something breaks down is a unique combination of weather (temp and humidity) organisms (fungal, bacterial and worms etc), and scale (large leaves vs small mulch). A paper bagged sack of mulched leaves will, if left on fresh soil with drainage, become “leaf mold” in one year. It’s gold for the garden.
The same quantity of leaves left whole and matted down with water can actually take a lot longer.
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