Eucommia ulmoides
Hardy Rubber Tree

 Plant Type:
 Hardiness:
 Deciduous / Evergreen:
 Flowers:
Brown (Dioecious, ornamentally unimportant)
 Foliage:
Green (Dark green in summer); Yellow (Poor yellowish green fall color)
 Fruit:
Green (Capsule-like with compressed wings, 1-seeded)
 Ultimate Height:
40-60 feet
 Ultimate Spread:
40-60 feet
 Soil:
Adaptable to soils ranging above pH 7, needs well drained soils.
 Range:
Central China, no longer known in the wild.
 Diagnostic Characteristics:
Leaves simple, alternate, 3-6" long, 1.5-3" wide, elliptic or ovate to oblong-ovate, acuminate or rounded, serrate, attractive dark green, glabrous and rugose at maturity. When leaf is torn it exhibits rubbery substance. Buds are imbricate, sessile, ovoid, chestnut brown, 1/4" long, ends in a leaf. Olive brown stems with chambered pith. Rigid, furrowed bark that is stringy and rubbery when stripped.

Additional Information

It is the only member of this family. Contains about 3% rubber content on a dry weight basis. It is the only rubber producing tree for the central and northern parts of the U.S. Extraction can be very difficult. Leaves are shaped similarly to elms. Adaptable to soils ranging above a pH of 7, intolerant of poor drainage.

Other Plants Like This Eucommia (Rubber Tree Tree, Rubber)

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