Black Walnut Trees are a vital native tree that produces both food and forage for many species. It is also known for its allelopathic properties making it impossible for some plants to grow to maturity near them.
Juglone is an allelopathic compound, a substance produced by a plant to stunt the growth of another plant.
Juglone affects germination of plants less than it affects growth of the root and stem systems.
From our personal experience in the field, here are species that tolerate, if not thrive in the presence of Black Walnut Trees.
