Joining forces against hemlock woolly adelgid

By Nicole Mielewczyk and Erin Appleton

This blog post was originally published to Cultivating Science on science.gc.ca.

Many would have been discouraged by the pouring rain and cold winds that settled in southern Ontario on April 21, 2022. But a dedicated team of specialists was undeterred and eager to get to work on some important research on hemlock woolly adelgid (HWA) - an aphid-like insect pest that attacks and kills hemlock trees.

HWA egg sacs look like cotton balls or clumps of snow, and are found on a tree's twigs, near the base of a needle. It can spread by many pathways and has been known to wipe out whole forests of hemlock trees. The CFIA works with partners in plant health protection, like CFS and BIO, to better understand and reduce the impacts of this harmful pest.

Read the full blog post.