Walnut trees

Question

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.

Answer 1

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