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Mulch garden beds with fall leaves

What’s the best way to use leaves as mulch in the garden? Can we just blow them off the lawn and into the garden beds?

leaves 2Most leaves can become a good source of mulch for garden beds. And yes, you could just blow them off the grass and into the beds, but it would be better to shred them before piling them onto your garden areas. Leaves that have been chopped up will decompose faster; a thick layer of leaves left intact may also smother the plants underneath, and prevent water from reaching the soil.

You can chop the leaves easily by mowing over and collecting them in a bagger attachment, or by using a shredder.

These guidelines for using leaves as mulch are from the UT/TSU Extension office:

*Use a 3- to 4-inch layer of shredded leaves around trees and shrubs in annual and perennial flower beds.

*Oak leaves may change the pH of the soil over time, making it more acidic, so you may have to apply lime to maintain a favorable number. If your beds are mulched primarily with oak leaves, you should have the soil tested about every three years. Oak leaves are also tougher and decompose more slowly, so it’s especially important to chop them before you use them to cover your perennial beds.

*Leaves can be mixed into kitchen garden beds and in beds where you plant annual flowers. Most of the leaves will decompose before planting time next spring. A bonus: if you have heavy clay soil, a thick layer of leaves tilled into the soil will improve the soil structure.

One other piece of advice comes from Deb Beazley, a naturalist at Warner Park Nature Center who leads workshops on organic gardening: When you rake leaves, set some aside for later. Next spring and summer, when you need more mulch, you’ll have a handy source of fall leaves to use.

“Cover them in bags so they don’t decompose by the time you need them next June,” she suggests.

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