Hemlock Woolly Adelgid in New Hampshire: What have we Learned? program

When:
August 11, 2026 @ 6:00 pm – 8:00 pm
2026-08-11T18:00:00-04:00
2026-08-11T20:00:00-04:00
Where:
Peterborough Town Library
2 Concord Street
Peterborough
NH
Cost:
Free
Contact:
UNH Extension

UNH Extension will hold a Hemlock Woolly Adelgid in New Hampshire: What have we Learned?  program at Peterborough Town Library on August 11th from 6 to 8 pm.

Staff from the UNH Extension and NH Division of Forests and Lands will hold a discussion about the impact of hemlock woolly adelgid (HWA) over the past 25 years in the Monadnock Region.

Presenters will share the status of hemlock in the state, information about hemlock woolly adelgid, and efforts to control this forest pest in the state and beyond.

Professional licensing credits will be offered:

  • 0 SAF Category 1 CFEs
  • 0 NH Pesticide Recertification Credits

Agenda:

Steven Roberge, UNH Extension: Welcome and Introductions

Kyle Lombard, NH Division of Forests and Lands

  • Introduction NHDFL Forest Health Program
  • History of HWA in New Hampshire
  • Pesticide Treatment options

Ryan Crandall, NH Division of Forests and Lands

  • Background information on HWA
    • How it got here & its native range
    • Life cycle
    • Impact on tree
    • Winter survival of HWA
  • History and current direction of federal Biological Control program in Eastern US
    • What biological control is and isn’t
    • Predators released
    • What controls HWA in native range
    • Efficacy of  nigrinusin eastern US
    • History of biological control program in New Hampshire