Can black walnut tree branches be chipped for mulch without poisoning my plants? Where can these chips be used?

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Can black walnut tree branches be chipped for mulch without poisoning my plants? Where can these chips be used?

Can black walnut tree branches be chipped for mulch without poisoning my plants? Where can these chips be used?

My property is adjacent to a black walnut tree farm. The previous owner of my land allowed the fallen branches to be put inside the brush along my long driveway. Now I want to clean out the brush and there are large piles of these branches. Rather than pay to haul these away, can I chip these up and use the chips to keep the weeds down along the tree line? Or will they poison the trees and shrubs that I want to keep? Are the chips and shredded leaves poisonous to other plants?

from admin 2 years 43 weeks ago
answers (2)
Editor
admin's picture
Hi,Living next door to a Black Walnut tree farm? You have my condolences..juglone is the enemy you fight here. It is produced in all the tissues of Walnut and Butternut trees, and can cause wilt and death of surrounding plants. Mulch made from these trees can only be safely used around plants that are resistent to juglone's effects. Good luck!
Editor
admin's picture
Overwhelming response from our Twitter followers is NO: @Anniespeed: juglone is present in all tissues of the Walnut tree..which makes it a poor mulch candidate. @BentsGardenHome Hi, Black Walnut shouldn't be used for mulch, even after a period of composting will still contain poision. So steer clear! @newleafgardencl no they should not be used as they are toxic see this article:http://www.ces.purdue.edu/extmedia/HO/HO-193.pdf @KobesNurseries Ohio State University has a great article on Black Walnut toxicity which specifically mentions mulch. http://ohioline.osu.edu/hyg-fact/1000/1148.html JoyKuebler black walnut- I would not suggest it. Toxin found in leaves, bark, roots, nuts...

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