All of that tissue underneath the superficial bark layer is critical in transporting nutrients to the rest of the tree. With the amount of tissue removed, the trees could starve to death.

Locate the branch collar. The branch collar, which encircles the branch parallel to the trunk, contains special tissue that enables the tree to seal the wound, Janoski said, so it’s critical not ...

The fungus invades the xylem (ZI-lem), the water conducting tissue, that extends from the roots up through above-ground tree tissue. All oaks are susceptible to infection by B. fagacearum but red ...