Robert L. Anderson, USDA Forest Service, Bugwood.org
shoot canker and dieback in nursery
USDA Forest Service - North Central Research Station , USDA Forest Service, Bugwood.org
Diplodia tip blights (Diplodia spp.) symptoms on pine (Pinus spp.)
Minnesota Department of Natural Resources - FIA , Minnesota Department of Natural Resources, Bugwood.org
pitch zone on red pine shoot
Larry Osborne, Bugwood.org
Diplodia tip blights (Diplodia spp.) symptoms on corn (Zea mays)
Minnesota Department of Natural Resources - FIA , Minnesota Department of Natural Resources, Bugwood.org
canker on stem
William Jacobi, Colorado State University, Bugwood.org
Galls on the side of an aspen trunk (Populus tremuloides) caused by corky bark disease (Diplodia tumefaciens).
Ronald S. Kelley, Vermont Department of Forests, Parks and Recreation, Bugwood.org
Diplodia tip blights (Diplodia spp.) symptoms on balsam fir (Abies balsamea)
Manfred Mielke, USDA Forest Service, Bugwood.org
corky bark disease (Diplodia tumefaciens) symptoms on quaking aspen (Populus tremuloides)