It is peak season for adult wood-boring insects to be spotted outside of trees, and their impacts are most obvious in the summer. Invasive pests like the emerald ash borer, LDD moth (Lymantria dispar dispar) and hemlock woolly adelgid are serious threats to Canada's economy, environment and society. This August, the Canadian Food Inspection Agency (CFIA) encourages everyone in Canada to take an active role in protecting Canada's plants by joining plant health enthusiasts from coast to coast to coast who will be participating in Tree Check Month. It only takes a few minutes to check so please take a quick trip outside to inspect the trees in your yard or in and around your community. Start by looking at the whole tree, then focus on specific areas. Look for unusual or sudden changes in tree health, including leaf discolouration, bark cracks, insect holes and tunnels under bark that has come off. Start your inspection at the roots, move up the trunk and along the branches, looking for noticeable insect populations and evidence of feeding activity on the leaves.