Acer rubrum 'Armstrong'

Armstrong Red Maple

Acer rubrum ‘Armstrong’ is a narrow, columnar red maple selected for its strong central leader, upright growth, and suitability for tight spaces. It combines the adaptability of red maple with a space-saving form, making it especially useful in urban and residential settings.

Spring foliage emerges medium green, forming a dense vertical canopy through summer. In fall, ‘Armstrong’ develops bright orange-red to scarlet coloration, providing reliable seasonal interest. The narrow branching habit helps reduce conflicts with sidewalks, buildings, and overhead utilities.

‘Armstrong’ performs best in full sun to partial shade and adapts well to a variety of soils, including moderately moist sites. It tolerates urban conditions better than many large shade trees.

Size



Width: 12–15 ft



Height: 50–60 ft



Hardiness



USDA Zones: 4–9



Best Uses


Street and boulevard tree



Narrow lawn spaces and medians



Urban and commercial landscapes



Elm alternative with vertical form



Sites with limited horizontal space

Plant type

Shade Tree, Street Tree

Height

50-60'

Width

12-15'

Hardiness zones

4–9

Sunlight

Full Sun

Growth rate

Fast

Bloom time

Spring

Leaf color

Green

Fall color

Red

Attracts

Bees

Soil

Clay, Loamy, Sandy, Well Drained

Landscape use

Provide Shade, Street Tree

Shape

Narrow Upright

Bark

Fissured

Fruit

Yes

Deer resistant

Yes

Drought tolerant

No