Maturing at a height of 50 to 60 feet and a spread of 20 feet, Armstrong is a good tree for narrow planting areas. Small green leaves of summer turning yellow-orange in the fall.
Hardiness Zones: 4-9 Habit: deciduous Growth rate: fast Ideal planting location: part shade/part sun to full sun; well-drained soil; moderate drought and heat tolerance. Form: upright tree with silver-gray bark; trees are shorter in southern range. Height: 50 to 60 feet Width: 15 to 25 feet Leaf: 2 to 4 inches, opposite/subopposite, green leaves; red, orange and yellow fall color; one of the first maples to develop fall color.