An attractive dense, narrow, and upright tree with ascending branches and silver-grey bark. Leaves resemble its Silver Maple parent, are 3-6? across, and are some of the first to begin turning red, yellow, and orange in the fall and last for several weeks. Armstrong Maple is an excellent replacement for columnar Sugar and Norway Maples due to its higher tolerance of heat and vigor. A good choice for plantings where space demands a limited spread.