Salix babylonica (Weeping Willow; Babylon Willow) - This stately tree makes a unique specimen that dominates the landscape with its pronounced weeping habit and long, flowing branches that wave with the slightest breeze. A nice patio or terrace shade tree. Deciduous. Rapid grower 30 to 50 feet tall and 30 to 40 feet wide. Needs wet or constantly moist soil.