Exfoliating bark and great shade! Posted on March 18, 2021 at 4:10 pm.Written by Losely Admin Platanus bloodgood is widely planted in urban areas. It is a large shade tree with a broad open crown and its unique bark exfoliates to reveal patches that may be creamy white, yellow, or olive-colored. Platanus exclamation also has exfoliating bark. This variety has a strong upright pyramidal shape. This tree makes a great street tree. Ulmus am princeton is a fast-growing elm with a symmetrical upright form and dark green foliage. Ulmus am valley forge is an extremely hardy shade tree with an upright vase-shaped habit of growth and a very dense branching structure. Both varieties have shown to be some of the best for resisting Dutch Elm Disease.