In a Holden Arboretum greenhouse lined with rows of potted trees, researcher David Burke points to dark banding patterns on one leaf – a sign of a relatively new disease that is afflicting area beech trees and which can eventually kill them.At another pot, he points to a “twisted and contorted” bud that can result […]
The insect, emerald ash borer, has killed more than 40 million ash trees in the state. A USDA lab in Brighton reproduces parasitoids, a natural predator native to Asia and Russia used for EAB biocontrol.