Learn More › Often grown in the eastern United States, all types of walnut trees are large deciduous trees prized for their dark brown hardwood, according to the National Park Service.
But black walnut trees (Juglans nigra ... and nut hulls. While other types of trees also produce juglone, black walnuts and butternuts tend to cause the most problems. Plants sensitive to juglone ...
With growing interest in High-Density Walnut Plantation (HDWP), farmers in Jammu and Kashmir are increasingly shifting from ...