Garry oak ecosystems In British Columbia, the Garry oak (Quercus garryana) is categorized as a small to large-sized deciduous broadleaf tree, dependent on its growing conditions. Garry oak is in the Fagaceae family, and is sectioned with white oaks (Quercus sect. Quercus). Characterized by a broad, rounded crown, Garry oaks are known for stout, often forked stems, twisted branches, and dark … Continue reading Learn