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Acer rubrum 'Armstrong'

Columnar Red Maple
  • Plant Type:
  • Tree
  • Evergreen-Deciduous:
  • Deciduous
  • Overall Mature Size:
  • Large
  • Also Grown As:
  • Standard Tree
  • Mature Height & Spread :
  • 45' x 15'
  • Natural Growth Habit:
  • Narrow, Upright
  • Native To:
  • USA
  • Exposure:
  • Full Sun
  • Water:
  • Medium Water
  • Flower Color:
  • Insignificant
  • Special Features:
  • Attracts Birds/Butterflies, Cold Hardy, Fall Color, Intermountain Conditions
  • Container Sizes:
  • #15, 24" Box, 36" Box
  • Sunset Garden Zones:
  • 1-9, 14-17
  • Minimum USDA Hardiness Zone:
  • 4


A deciduous tree native to the low, wet areas of the eastern United States and Canada, this cultivar is distinguished by its very narrow (15-20 feet wide) habit. Ultimately, a typical specimen will be 50 to 60 feet tall. It is considered a fast grower and has a columnar form. Large green star-shaped leaves are 3-lobed and yellow, orange, or red in the fall. It bears showy red samaras in the spring and the fruit attracts squirrels and other small animals. Given full sun, it will develop a dense shady crown whereas part sun will render the tree more open. It tolerates nearly any kind of soil but requires ample water when young. This is an excellent choice wherever a narrow shady tree is required.