Juglone, secreted by the roots of black walnut (Juglans nigra) and butternut (Juglans cinerea) trees, inhibits the growth of or kills many other plants growing in the trees’ root zone, an effect known as “walnut wilt” or “allelopathy.”
Grant Barrett
Linguist, lexicographer, radio host, public speaker
Juglone, secreted by the roots of black walnut (Juglans nigra) and butternut (Juglans cinerea) trees, inhibits the growth of or kills many other plants growing in the trees’ root zone, an effect known as “walnut wilt” or “allelopathy.”