Sometimes the best thing on a plant isn’t the greenery. Such is the case with Acer griseum, the paperbark maple. A native of China, this tree can reach upwards of 30 feet in height with a spread of 25 feet. However, that is not necessarily the draw for this Zone 4-hardy maple. It is the trunk, a cinnamon-colored beauty of peeling bark that particularly stands out in the winter. The trunk can reach a diameter of 2 feet, making it even more impressive in the starkness of winter. An added benefit is that the leaves turn a reddish shade in autumn before they fall. This specimen is at the Lyle E. Littlefield Ornamentals Trial Garden at the University of Maine campus in Orono.