Water Oak (Quercus nigra) – A semi-evergreen tree that can grow up to 60 feet tall. Bark is dark—smooth when young and later developing wide, scaly ridges. Acorns are eaten by birds, deer, squirrels and other wildlife. The White-M hairstreak butterfly lays its eggs on this tree. The spreading, rounded, open canopy is weaker than most oaks and subject to wind damage.