Plants

Ulmus pumila

[Siberian Elm]

Grows under almost any conditions, especially useful in dry sites. Resists Dutch elm disease. Leaf beetles can defoliate trees. Brittle branches and subsequently messy. Avoid planting this tree in the landscape, unless there is no other choice. Considered invasive in many areas.

Ulmus rubra

[Slippery Elm]

The Slippery Elm has a vase-shaped form, similar to that of the American Elm (Ulmus americana), but with more ascending branchlets. This tree gained its common name from the moist, slippery, red inner bark chewed by Native Americans and pioneers to quench thirst. Not considered very ornamental for the landscape, due to its coarse texture, weedy tendencies, and susceptibility to Dutch Elm Disease (although not as severe as the American Elm).

Ulmus sp.

[Elm]

The Elm genus, Ulmus, contains about thirty species of mostly deciduous trees. Generally susceptible to Dutch Elm Disease, which is caused by Ophiostoma ulmi. (Dutch Elm Disease has lead to the near extinction of the American Elm in the US).

Ulmus thomasii

[Rock Elm]

Ulmus × 'Frontier'

[Frontier Elm]

Small tree that grows well under city conditions. Good Dutch elm disease resistance and moderate elm leaf beetle resistance.

Ulmus × 'Morton Glossy' [sold as Triumph™]

[Triumph Elm]

Upright oval to vase-shaped habit with arching branches, glossy dark green summer foliage, changing to yellow in fall; hybrid between Accolade® and Vanguard™. Dutch elm disease resistant, the best habit in early age of the Morton Arboretum elms.

Ulmus × 'Patriot'

[Patriot Elm]

'Patriot' is a cultivar with high resistance to elm leaf beetles and Dutch elm disease. It also has some resistance to elm yellows. It has green leaves that have a glossy texture and turn yellow in the fall. It is used many times as a street tree due to its fast-growing nature and its road salt tolerance.

Zelkova serrata

[Japanese Zelkova]

An excellent shade tree, probably one of the best substitutes for Ulmus americana in form and gracefulness, but slightly smaller. A beautiful wood grain for furniture, etc. Minor susceptibility to various elm diseases and pests, but resistant to Dutch Elm Disease.

Zelkova serrata 'Green Vase' [sold as Green Vase®]

[Green Vase Japanese Zelkova]

Green Vase is a vigorous, fast-growing, vase-shaped variant with upright, arching branches. Widely considered one of the best Zelkova serrata variants and is frequently compared to Village Green. An excellent shade tree, probably one of the best substitutes for Ulmus americana in form and gracefulness, but slightly smaller. A beautiful wood grain for furniture, etc. Minor susceptibility to various elm diseases and pests, but resistant to Dutch Elm Disease.

Zelkova serrata 'Halka'

[Halka Japanese Zelkova]

An excellent shade tree, probably one of the best substitutes for Ulmus americana in form and gracefulness, but slightly smaller. A beautiful wood grain for furniture, etc. Minor susceptibility to various elm diseases and pests, but resistant to Dutch Elm Disease. Considered to be one of the more popular cultivars of Zelkova serrata, although Green Vase and 'Green Village' tend to be better performers. 'Halka' is more open and loose and the fall color is…