Growing Plants Under Walnut Trees
Plants Known to Grow Well Under Black Walnut Trees
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The roots of Black Walnut produce a substance known as juglone. Plants adversely affected by being grown near black walnut trees exhibit symptoms such as foliar yellowing, wilting and eventually death.
The toxic zone from a mature tree occurs on average in a 50-60 foot radius from the trunk.
Not all plants are sensitive to juglone. Plants grown by Great Garden Plants that have been observed growing under or near Black Walnut include:
Ferns: Dryopteris, Osmunda