Accolade Elm develops a vase-shaped crown at a rapid growth rate. Dark green leaves turn yellow in the fall. Accolade was developed at the Morton Arboretum, and it is well-adapted to our climate. This is a Japanese Elm hybrid, so it is resistant to Dutch Elm Disease. Accolade prefers moist, well-drained soils in full to part sun. It makes a great street tree.