Boxwood leafminer larvae. Photo credit: Nancy Gregory
Bacterial wetwood on Dogwood. Photo credit: J. Testa, Mt Cuba Center
Bacterial wetwood on dogwood. Photo credit: R. Larkin, Nemours Garden
Winter injury on liriope. Photo credit: Tomlinsonbomberger.
Ambrosia beetle frass. Photo credit: Brian Kunkel
Ambrosia beetle damage on cherry. Photo credit: Brian Kunkel
Golden canker on Cornus alternifolia. Photo credit: Nancy Gregory
Monilinia on Kwanzan cherry. Photo credit: Nancy Gregory
Galls of cedar-apple rust with telial spore horns. Photo credit: Glenn Gladders
Easter tent caterpillar web webbing. Photo credit: Brian Kunkel
Egg mass of Eastern tent caterpillar. Photo credit: Brian Kunkel
Phomopsis galls on forsythia. Photo credit: Nancy Gregory
Leaf spotting characteristic of boxwood blight. Photo credit: Nancy Gregory
Forsythia x intermedia in bloom corresponding to Eastern tent caterpillar hatch. Photo credit: Tracy Wootten
Magnolia stellata in bloom corresponding to Eastern tent caterpillar hatch. Photo credit: Tracy Wootten
Spore masses of Calonectria (white) and Volutella (orange). Photo credit: Nancy Gregory
Brian Kunkel teaching Greenhouse IPM. Photo credit: Tracy Wootten
One of the recovered Beltsville specimens of Trissolcus japonicas emerges from a BMSB egg. Photo credit: Elijah Talamas, USDA Agricultural Research Service, Systematic Entomology Laboratory
Dutch elm disease. Photo credit: William M. Brown, Jr., Bugwood.org
Rubbing branches. Photo credit: Tracy Wootten