Plant Name: Armstrong Maple
Scientific Name: Acer rubrum ‘Armstrong’ — Armstrong Red Maple, Armstrong Columnar Maple
Mature Height: 40–50 ft
Mature Spread: 15–20 ft
Growth Rate: Moderate to fast (1–2 ft/year)
Sun: Full sun to partial shade
Water: Moderate; 5–10 gal per watering while establishing, 2–3 times/week during hot, dry weather; 15–25 gal per watering once established during extended dry periods
Foliage: Medium green, 3–5 lobed leaves; deciduous
Fall Color: Orange-red to bright red
Flower Color: Red to reddish-orange
Bloom Time: Late winter to early spring
Fruit: Paired winged samaras, red to brown, produced in spring
Hardiness Zones: 4–9 (−30°F to 30°F)
Features: Narrow, upright form; excellent street or space-saving shade tree; attractive red fall color; smooth gray bark
Additional Facts: Armstrong Maple is a columnar selection of Red Maple that grows significantly narrower than typical red maples. Its upright form makes it useful where a large shade tree is desired but horizontal space is limited.