Managers Volunteers Partners

HWA Hunters

The Eastern Hemlock (Tsuga canadensis) is a hugely important tree species upon which entire ecosystems depend. This species provides stream habitat for trout species, creates habitat for countless native plant and animal species, and enhances any outdoor recreation experience. Unfortunately, these majestic trees are under attack from the Hemlock Woolly Adelgid (HWA), an invasive, aphid-like insect.

Slowing the spread of HWA is the most important way we can help preserve our hemlock forests. The early detection of emerging infestations is a great way to do this, but we need volunteers like you to help!  

  1. Sign up to be a community scientist! Remember to request to be added to our Community Scientist Bulletin. You’ll receive email updates on HWA surveys, photos, events and more!
  2. Check out our HWA Virtual Survey Training to learn how to identify hemlock and HWA; download iMapInvasives app to your phone and make an account; and winter hiking safety.
  3. You can choose to adopt a park, trail or stream to survey this winter. Send your selection to Rachel Taylor, Community Science and Engagement Program Manager:
  4. Survey while you hike and make reports using the iMapInvasives app.


iMapInvasives App Download Tutorial