The wood from hardwood trees tends to be harder because the ... sometimes hundreds of years, and often have grey-to-black bark that is scaly or furrowed. They are popular among wildlife for ...

This chemical is released from the roots and is also found in smaller concentrations in the leaves, bark, wood, and nut hulls. While other types of trees also produce juglone, black walnuts and ...

The tree has a dense, highly resinous wood that is a formidable barrier to invasion by insects and bacteria. The resinous wood and the White Mountains' cool, dry climate also appear to keep rot ...