You may have heard of a technique in gardening called "sheet mulching" or "lasagna gardening." This technique has been touted as a great way to wipe out weeds and build rich, organic soil. There are a few methods you can use when sheet mulching, depending mostly on whether you want to do shallow sheet mulching or deep sheet mulching. Shallow sheet mulching consists of a single layer of cardboard, or a few sheets of newspaper, and one layer of mulch. Deep sheet mulching consists of multiple layers of paper, brown mulch, and green mulch. Learn more about sheet mulching and how it works here.

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Materials:
Hose
Supply of untreated cardboard or several stacks of newspapers. (If you use newspapers, make sure they are paper only—no plastic content.)
You will also need a bunch of mulch to lay over the entire area at least 2 to 4 inches thick. Amounts will depend on the size of the area you want to cover.

To calculate the amount of mulch you need, use this formula:
Square footage × desired depth ÷ 324 = cubic yards needed

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