Walnut Trees

Walnut Trees

Anonymous added on September 9, 2017 | Answered

Our walnut trees must ooz a black liquid. anything under or near them have blackspots/or more covering it. Our deck railing gets black. It can be washed off mostly but not completely. Is there a way to prevent this? The flowers below the trees grow great in the summer, but now this black stuff is all over them.

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Certified GKH Gardening Expert
Answered on September 10, 2017

Be cautious about planting near black walnut. They emit a chemical from their roots called juglone. This chemical is toxic to most plants. Here is an article that will help:https://www.gardeningknowhow.com/edible/nut-trees/black-walnut/black-walnut-compatible-plants.htm

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