Black Walnut Tolerant Plants
Black Walnut trees produce a chemical called hydrojuglone, found in the leaves, stems, hulls, bark and roots. When exposed to the air or soil, hydrojuglone is oxidized into the chemical juglone. Juglone is toxic to numerous plants, but many are resistant to the toxins. The native plants in this category are compiled from a variety of reliable sources and from our own experience. Note: Soil that is compacted, slow draining, or lacks sufficient healthy microbial growth, will have less success supporting plants under Black Walnut trees.
Black Walnut trees produce a chemical called hydrojuglone, found in the leaves, stems, hulls, bark and roots. When exposed to the air or soil, hydrojuglone is oxidized into the chemical juglone. Juglone is toxic to numerous plants, but many are resistant to the toxins. The native plants in this category are compiled from a variety of reliable sources and from our own experience. Note: Soil that is compacted, slow draining, or lacks sufficient healthy microbial growth, will have less success supporting plants under Black Walnut trees.
