Acer truncatum

Purpleblow Maple, Shantung Maple

Aceraceae

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Habitat

  • native to China, Manchuria and Korea
  • zone 4

Habit and Form

  • deciduous
  • a small tree, 20' to 25' tall
  • rounded, broad crown with regular branching
  • texture is medium

Summer Foliage

  • opposite, 3" to 5" wide and not as long
  • 5-lobed, lobes triangular, two basal lobes drawn out and narrow, lobes untoothed
  • 2 spurs on the basal lobes point to petiole base
  • milky sap
  • on first inspection may be confused with Acer platanoides
  • glossy green, good quality in summer; may emerge reddish

Autumn Foliage

  • usually yellow and orange with some red

Flowers

  • greenish yellow in May

Fruit

  • samaras, 1.25" to 1.5" long

Bark

  • gray brown on older branches and trunk
  • twigs may have purplish cast

Culture

  • apparently adaptable and hardy, but uncommon, so data is limited
  • have observed trees growing well that were in compacted, dry soils
  • full sun provides for best landscape development

Landscape Uses

  • good for small residences as shade tree

Liabilities

  • seems to be relatively problem free based on limited data
  • tar spot has been observed

ID Features

  • milky foliage sap
  • unique leaf shape

Propagation

  • by seed, but seed viability in the U.S. may be low
  • can also root stem cuttings of young plants

Cultivars/Varieties

subsp. mono - Known as the Painted Maple, this plant is similar to A. truncatum, but could be described as more refined. Has more ornamental bark and "boxier" leaves. Vase-shaped with a dome-like canopy.

© 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.