Eucommia ulmoides

Hardy Rubber Tree

Eucommiaceae

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Habitat

  • native to central China
  • hardy to zone 5, and warmer parts of 4

Habit and Form

  • a large, deciduous tree
  • 40' to 60' tall
  • width is greater than height
  • rounded habit
  • medium growth rate
  • medium texture

Summer Foliage

  • alternate leaf arrangement
  • simple, deciduous leaves
  • 3" to 6" long
  • 1.5" to 3" wide
  • ovate leaf shape
  • serrate leaf margins
  • dark green leaf color
  • rough texture
  • rubbery substance when leaf is broken

Autumn Foliage

  • none, leaves fall green

Flowers

  • dioecious
  • no ornamental significance

Fruit

  • brown, capsule-like with appressed wings
  • looks like a large, plump, elm fruit
  • 1.5" long
  • notched apex
  • 1 seed

Bark

  • ridge and furrowed gray-brown bark
  • attractive
  • branches end in leaf

Culture

  • easily transplanted
  • soil tolerant
  • full sun
  • pH adaptable
  • somewhat urban tolerant

Landscape Use

  • shade tree
  • park tree
  • for high quality foliage
  • street tree

Liabilities

  • none serious

ID Features

  • imbricate, sessile buds
  • no terminal buds
  • ovate leaf shape with serrated leaf margin
  • waxy substance when leaf is broken

Propagation

  • by seed
  • by 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.