The Q&A Archives: Weed barrier/mulching

Question: Can newspaper be used as a weed barrier before adding mulch/bark? How thick should paper be applied? How thick mulch?

Answer: I use about 6 layers of newspaper under my mulch and it works beautifully. Or you can use a single thickness of cardboard if that's available to you. The mulch material should be 3-4 inches thick to keep weeds from sprouting.

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