Pests and Diseases

A specialized service offered at Bartlett is our MoniTor® program that involves one or multiple visits by a Bartlett Plant Health Care Specialist inspecting all woody trees and shrubs on

Oak Leafroller

The oak leafroller is one of a group of spring feeding caterpillars that roll, fold or tie leaves together with silk

Winter Moth

Adult winter moths congregate at the front door of this property in Dartmouth, Massachusetts. The moths are harmless but their offspring feed aggressively on most deciduous trees.

Hemlock borer requires a stressed or weakened host. The two major causes of stress for hemlock are defoliation and drought. Susceptibility to drought results from the fact that this conifer

Chalara fraxinea is being treated as a quarantine pest under UK national emergency measures; it is important to report any suspected cases. The disease caused by the Chalara fraxinea fungus

Tent Caterpillars (or Tent Worms) are being found throughout many parts of North America, as evidenced in the photo above taken in Colwood, British Columbia, in the Victoria area. Make

The New York State Department of Environmental Conservation (DEC) has announced that Emerald Ash Borer has been detected in Buffalo. This is the first infestation found in Erie County. Recently,

Evidence of the Maple Petiole Borer has generated several requests from people in Manlius and Cazenovia to have their Maples inspected. I have also observed it at Colgate University in