Caterpillars on Birch Tree near downtown Toronto

Hello, first thank you very much to the person who answered my question yesterday about a young birch tree with an aphid infestation and now the appearance of tiny caterpillars about 1-2cm long. In the photo I sent yesterday it…

Birch Tree Disease?

See photo – our Birch tree is approx 25 yrs old. We live in Mississauga, likely with clay soil. It faces north so has part sun, part shade. We have a sprinkler system so is likely not dehydrated. The leaves…

Bronze Birch Borer: A Toronto Master Gardeners Guide

The bronze birch borer (Agrilus anxius) is a beetle native to North America. The borers’ larval feeding tunnels under the bark girdle the trunk or branch of the tree and interrupt the flow of nutrients and sap which eventually leads…