Morning Call: A branch of a healthy hemlock tree that has not yet been infested by the hemlock wooly adelgid, a voracious insect that is threatening eastern hemlock trees in Pennsylvania. The hemlock in the state's official tree.
A branch of a healthy hemlock tree that has not yet been infested by the hemlock wooly adelgid, a voracious insect that is threatening eastern hemlock trees in Pennsylvania. The hemlock in the state's official tree.
The warm winter Pennsylvanians enjoyed could be a harbinger of...