This Morton Arboretum introduction has been a great selection for many years. This tree has a mature form that is similar to the American elm, but is slightly more upright and a bit smaller. Accolade™ has shown excellent performance in winter hardiness tests in the Twin Cities area, and generally outperforms many other varieties in terms of insect resistance as well. In 2004 we discovered two Accolade™ elms that had Dutch elm disease. While this is disconcerting, it was a good reminder of what the term resistant means; none of these selections are immune to DED. One of the two trees, currently under observation at the U of MN, currently has no symptoms of the disease and continues to grow with incredible vigor!