Buckbrush is the common name for several species of North American shrubs that deer feed on, including but probably not limited to:Cephalanthus occidentalis Phyllanthopsis phyllanthoides, maidenbrush Some western North American species of the genus Ceanothus, especially: Ceanothus cuneatus Purshia tridentata and P. stansburiana Symphoricarpos orbiculatus, native to the eastern United States and Canada