Cornell University. Cooperative Extension of Suffolk County. Horticulture Diagnostic Laboratory.

See also: Tree and Shrub Insect Pests for more fact sheets.

Cornell University Cooperative Extension. Oneida County.

See also: Home and Garden - Weeds for more fact sheets

St. Lawrence - Eastern Lake Ontario Partnership For Regional Invasive Species Management (New York).

Columbia University. Center for Environmental Research and Conservation.

Columbia University. Center for Environmental Research and Conservation.

Columbia University. Center for Environmental Research and Conservation.

Columbia University. Center for Environmental Research and Conservation.

Columbia University. Center for Environmental Research and Conservation.

Columbia University. Center for Environmental Research and Conservation.

Columbia University. Center for Environmental Research and Conservation.

Columbia University. Center for Environmental Research and Conservation.

Columbia University. Center for Environmental Research and Conservation.

Columbia University. Center for Environmental Research and Conservation.

Columbia University. Center for Environmental Research and Conservation.

Columbia University. Center for Environmental Research and Conservation.

Columbia University. Center for Environmental Research and Conservation.

Columbia University. Center for Environmental Research and Conservation.

Columbia University. Center for Environmental Research and Conservation.

Columbia University. Center for Environmental Research and Conservation.

Columbia University. Center for Environmental Research and Conservation.