Common Name: hardy rubber tree
Scientific Name:
Family: Eucommiaceae
Genus: Eucommia
Species: E. ulmoides
Hardiness Zone: 4b to 7
Height: 40 to 60 ft
Width: 25 to 35 ft
Common characteristics:
The hardy rubber tree has a rounded canopy. It has a dense silhouette, which combines with its rich color to make it a very attractive ornamental tree. The bark is grayish-brown with ridges and furrowed. Leaves are arranged alternately on the branch and are simple in shape. The leaves resemble the leaves of elm but are dark green and glossy. The leaf when torn will exhibit an elastic, rubber substance used to make rubber.
Where it grows:
This is a very low-maintenance tree. It prefers moist, well-drained soil and is best in full sun. It is tolerant to dry sites, wet sites, and occasional droughts. Will grow in alkaline and clay soils. The tree will also tolerate road salts. Hardy rubber tree is known for being extremely drought tolerant while still retaining a deep green shine on its leaves.
How it’s used:
Makes for a great shade tree for lawns or parks. Because of its resistance to road salt, it would make a suitable street tree.
Where it is native to:
This tree is native to China.
Known Varieties and Their Traits:
Emerald Point™ Hardy Rubber Tree (Eucommia ulmoides 'Empozam'): A columnar, upright, narrow oval tree reaching 30-40 feet high and 15 feet wide. Seedless.
Problems:
Branches can be prone to storm damage. It has an extremely high resistance to pests and diseases and is being recommended more frequently as an optimal urban tree for its toughness and appearance.
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