tip: A dead branch can signify bacterial canker. Look
gumming on the bark surface.
Armillaria root rot (oak
Identification tip: Leaves often turn
pale and wilt, usually on one side of the tree. White
fungus can be seen if the bark is peeled from the
trunk where it meets the soil.
Phytophthora root and
Identification tip: Sparse, pale
foliage can indicate Phytophthora. Cankers can be found
in the bark at the crown area.