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. Head out to one of our region’s HWA Data Gap Parks. Survey while you hike! Make reports using the iMapInvasives app.


PLUS – Meet us out in the field!

If you prefer to survey in a group, join us for one of our HWA Walk and Talks this winter! While we hike, we will discuss the ecological importance of hemlock trees and the threat by hemlock woolly adelgid. We will demonstrate how to identify hemlocks, look for HWA infestations, and make reports to iMap. To make the most out of the experience, attendees are encouraged to download iMapInvasives app to their phone and make an account prior to the Walk and Talk. Join us on one (or all!) of the following dates:

  • Saturday, April 9, 2022 @ Rattlesnake Hill WMA  11 AM – 1 PM 
  • Sunday, April 10, 2022 @ College Lodge  10 AM – 12 PM

Registration is required.  


iMapInvasives App Download Tutorial