Division Info

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Programs

• Apiary (Bee)
• Arborist
• Horticulture
• Integrated Pest Management (IPM)
• Pest Survey
  • Cooperative Agricultural Pest Survey (CAPS)
  • Pest Information
• National Organic Program
• Seed Potato Certification

Boards and Councils

• Arborist Advisory Council
• Board of Pesticides Control
• Integrated Pest Management (IPM) Council
• Maine Seed Potato Board

Hemlock Woolly Adelgid

Hemlock woolly adelgid (HWA) is a serious pest of eastern hemlock. The most obvious sign of HWA infestation are the white cottony masses, resembling cotton balls, found at the base of the hemlock needles. Feeding from HWA causes needles to discolor and drop prematurely. Tree death can occur within a few years from the first infestation. HWA is dispersed by wind, birds, mammals and can be moved on plants in the nursery trade.

A Hemlock Woolly Adelgid Quarantine was established to protect Maine's hemlocks. Despite the best efforts to prevent the introduction of HWA into Maine, part of York county is now infested. However, the quarantine remains in place to slow and prevent the spread of HWA into other parts of the state.

Featured Topics

• HWA Infested Counties
• Hemlock Woolly Adelgid Quarantine
• Importing Hemlocks to Maine

Related Links

• USDA Forest Service
• Maine Forest Service