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Black Walnut Trees

Q.Black Walnut Mulch

Anonymous added on March 23, 2012 | Answered

Are black walnut shavings okay to use for mulch? Are there any harmful side effects for plants of any kind?

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Certified GKH Gardening Expert
Answered on March 23, 2011

All but a few plants can survive black walnut. Even when it is shredded for mulch, the wood will be allelopathic as it decomposes and kill many plants.

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