Buxus sempervirens Globe English Box Hedge. 5m x 4m. A large, evergreen shrub or small tree to 5m tall, with glossy, dark green leaves to 3cm long, and small, yellowish flowers in clusters, produced in the leaf axils during spring. Stiff erect habit. Slow growing. Very hardy & tolerant. Excellent formal edging, topiary or in containers. .