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Overall picture of white oak impacted by cynipid wasp galls. Photo: Sandy Feather, Penn State
Cynipid Wasp Galls: Making A Mess of White Oaks - News News
The Extension office received a sample of damaged white oak leaves from the North Hills of Pittsburgh. Given the amount of rain we have had all year, anthracnose was a possible suspect. More
Removing the burlap prior to setting the balled tree. Photo: Tim Abbey, Penn State
Review of Successful Tree and Shrub Planting - News News
During my twenty-four year career, the most common tree problem that I encounter isn’t an insect or a disease—it is us. More
Calonectria pseudonaviculata spores. Photo courtesy Margery Daughtrey, Cornell University
Boxwood Blight: Researchers Looking Outside of the Box for Solutions - News News
Boxwood blight (BB) continues to spread throughout the US. The University of Illinois Plant Clinic recently announced its presence in Illinois. More