Description
North Carolina Extension Information Sheet
Juglone from walnut, butternut, butternut, hickory and other nut trees
Hydroxyjuglone is a nontoxic, colorless precursor that is converted into the toxic form juglone by sensitive plants and through oxidation. It is found in the vegetative buds, leaves, stems, nut hulls, and roots of the plants. Penn State Extension has a great list of trees and shrubs that are tolerant to juglone and land care practices that may give you some wiggle room when planting around these wonderful, nutty trees.