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 ...

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

Its widespread branches are covered with dark green, lobed leaves that turn shades of orangish brown to reddish purple in the ...