Hardy Rubber Tree

Eucommiaulmoides

Genus
Eucommia (yoo-KOM-ee-uh)
Species
ulmoides (ul-moy-dees)
Synonym
Sun Exposure
Full Sun
Foliage
Deciduous
This plant is fire-retardant
Height
over 40 ft. (12 m)
Spacing
15-20 ft. (4.7-6 m)
Hardiness
USDA Zone 3a: to -39.9 °C (-40 °F)
USDA Zone 3b: to -37.2 °C (-35 °F)
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
Bloom Color
Pale Green
Inconspicuous/none
Bloom Time
Mid Spring
Late Spring/Early Summer
Other Details
Category
Trees
Water Requirements
Requires consistently moist soil; do not let dry out between waterings
Very high moisture needs; suitable for bogs and water gardens
Foliage Color
Where to Grow
Grow outdoors year-round in hardiness zone
Bloom Characteristics
Bloom Size
Other details
May be a noxious weed or invasive
Soil pH requirements
6.6 to 7.5 (neutral)
Patent Information
Non-patented
Propagation Methods
From leaf cuttings
Self-sows freely; deadhead if you do not want volunteer seedlings next season
Seed Collecting
Regional

This plant is said to grow outdoors in the following regions:

Lisle, Illinois

Urbana, Illinois

Cincinnati, Ohio

Cambridge, Wisconsin

Featured Videos

Gardener's Notes:

1
positive
1
neutral
0
negative
Sort By:
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R
Downingtown, PA | April 2019 | positive

In the 1950's to the 1990's there used to be a specimen right next to the Ornamental Horticulture Building in Urbana, Illinois, until tha...Read More

S
Oklahoma City, OK (Zone 7a) | August 2001 | neutral

Leaves alternate, simple, 8-15 cm long and about half as wide, elliptic, ovate, to oblong-ovate, acuminate, serrate, glossy dark green, w...Read More

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