Red oaks are most susceptible. Red oaks have leaves with pointed tips and include black oak, northern red oak, and northern ...

Fall colors are caused by the chemicals in the leaves. White birch trees have leaves that will turn yellow due to carotenoid ...

White oak leaves and marble-sized galls. Galls are growths on plants caused by invasions of parasites, viruses, fungi and bacteria -- making galls centers of activity for both attacks on a plant's ...