WSU Clark County Extension
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Armstrong Maple

Scientific name: Acer freemanii
Taxonomy
Family:Aceraceae
Type:Deciduous tree
Native:NO
Plant Requirements
Zone:4 to 9
Moisture:Medium
Plant Characteristics
Height:50 ft
Width:15 ft
Bloom:Spring flowers
Bloom Time:April
Bloom Color:Red
Additional Characteristics
Trees


Fruit

Leaves


Bark
Wildlife value

Poisonous
Description Armstrong red maple is a fast-growing, upright tree, reaching a height of 50 to 60 feet with a 15 to 25 foot spread, and has very attractive silver-gray bark.

  Morphology:
As a columnar deciduous tree, this maple is thought of as a hybrid between red and silver maple. Its leaves are 5-lobed and deeply cut, with more of the leaf shape associated with silver maple. Leaf margins are incised, and serrated. Over-all the leaves appear star shaped. They are 2”-4” in diameter. Red spring flowers give rise to samara seed pods in the fall. Fall color is not as good as true red maples cultivars, such as the ever popular ‘Red Sunset’.

  Adaptation:
The narrow spread of Armstrong maple makes it suitable for areas with limited horizontal space such as a planting site close to a building, or in narrow planting strips between streets and sidewalks. As with red maples, this variant can withstand wet soils.

  Pests:
Aphids and scale insects are always a possibility. While the leaves may scorch in dry areas, this is not a concern in milder, cooler summer locations.
For assistance, contact Dr. Charles Brun (brunc@wsu.edu), (360) 397-6060 5701
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