Acer carpinifolium

Hornbeam Maple

Aceraceae

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Habitat

  • native to Japan
  • zone 5

Habit and Form

  • probably an understory tree in native haunts
  • deciduous, small tree, 20' to 25' in landscapes
  • vase-shaped, oval or eventually rounded
  • often multistemmed

Summer Foliage

  • opposite, unlobed 3" to 5" long leaves
  • leaves are atypical for maple and resemble those of Carpinus caroliniana
  • dark green, slight bronze color on emerging leaves

Autumn Foliage

  • bronze, gold or brown
  • leaves may persist into winter

Flowers

  • greenish, in May
  • short racemes

Fruit

  • samaras, around 0.75" long

Bark

  • smooth and gray

Culture

  • prefers moist, well-drained soil
  • full sun to partial shade, but trees in full sun grow more vigorously

Landscape Uses

  • small lawn tree or patio plant
  • specimen
  • woods edge

Liabilities

  • rare, will be difficult to locate in commerce

ID Features

  • unique, hornbeam-shaped leaves lacking typical "maple lobes"
  • can be distinguished from Carpinus because leaves are opposite on maples

Propagation

  • probably seed
  • reported to root from August cuttings

Cultivars/Varieties

  • none

© Copyright Mark H. Brand, 1997-2015.

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Citation and Acknowledgements: University of Connecticut Plant Database, http://hort.uconn.edu/plants, Mark H. Brand, Department of Plant Science and Landscape Architecture, Storrs, CT 06269-4067 USA.