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Cornell Cooperative Extension

Suffolk County

  • Agriculture
  • Community Education
  • Gardening
  • Horticulture Labs
  • Marine
  • Suffolk County Farm
  • 4-H
  • Peconic Dunes Camp
  • Recursos en Español
emerald ash beetle

Emerald ash borer

black vine weevil
Image by Joseph Berger

Black vine weevil

Characteristic white ovisacs of hemlock woolly adelgid.
Image by Michael Montgomery, USDA Forest Service

Characteristic white ovisacs of hemlock woolly adelgid.

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  • Tree and Shrub Insect Pests
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Tree and Shrub Insect Pests


The Interactive Plant Manager: Diagnosing Pests of Woody Ornamental Plants

Arborvitae Leafminer

Asian Longhorned Beetle (NYS DEC fact sheet)

Birch Leafminer

Black Turpentine Beetle & It's Role in Pine Mortality

Black Vine Weevil (Taxus Weevil)

Cankerworms (Inchworms)

Emerald Ash Borer (NYS DEC early detection brochure)

Emerald Ash Borer (NYS DEC poster)

Hemlock Woolly Adelgid

Holly Leafminers

Horned Oak Galls

Norway Spruce Gall Midge

Periodical Cicada Emergence in Suffolk County - 2008

Pine Sawflies

Southern Pine Beetle (DEC fact sheet)

Spongy Moth (formerly Gypsy Moth)

Spotted Lanternfly

Spotted Lanternfly and Pets (FAQ's)

Spruce Gall Adelgid

Spruce Spider Mite

The Japanese Black Pine: What's Happening

White Pine Weevil

White Prunicola Scale

Contact

Alice Raimondo
Horticulture Consultant
aw242@cornell.edu
631-727-4126

Last updated March 9, 2023

Horticulture Factsheets

  • General Gardening Information
  • Sustainable Gardening
  • Vegetable Gardening
  • Vegetable Diseases
  • Vegetable Insects
  • Lawn Care
  • Lawn Pest Control
  • Tree / Shrub / Groundcover / Vine
  • Tree and Shrub Maintenance
  • Tree and Shrub Insect Pests
  • Tree and Shrub Disease
  • Flowers, Bulbs, and Ornamental Grasses
  • Small Fruit
  • Small Fruit Pests
  • Tree Fruit Growing
  • Tree Fruit Insect Pests
  • Tree Fruit Diseases
  • Indoor / Outdoor Insect Pests
  • Tick Biology and Control
  • Wildlife
  • Indoor Plant Care
  • Christmas Trees
  • Integrated Pest Management
  • Poisonous Plants
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Cornell Cooperative Extension
Suffolk County

Extension Education Center
423 Griffing Avenue, Suite 100
Riverhead, New York 11901-3071
TEL: 631-727-7850
suffolk@cornell.edu
Hours: 8:30am-4:30pm

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