Maple, Red Armstrong
Acer rubrum "Armstrong"
Category: deciduous tree Size: medium
Mature Size: 40 -50' x 10 - 20'
Zone: 3-9 Growth Rate: Fairly fast
Elevation (if known):
Water: Prefers wet or moist, well-drained soils. Tolerates deer, some drought, pollution, wind.
Soil : Well-adapted to most soil conditions
Sun: Prefers sun, but is shade tolerant.
Comments: Although sold as A. rubrum, are actually A. x freemanii, hybrid between it and A. saccharinum. Orange to red fall color. Wonderful fall color in moist conditions. Doesn't grow as fast as the silver maple. Often preferred over columnar Sugar Maple or columnar Norway Maple because it is more vigorous and tolerates heat better.
Warnings: Can develop surface roots.
Alamosa Tree Board Recommended? yes
Street Tree? yes Street Tree Conditions: Good if well watered. Narrow crown width makes it suitable for areas with limited horizontal space.
CO/NM native? no Native to: Eastern US and Canada
Information Sources: Sunset Western Garden Book; USDA;