Plants

Ulmus americana 'New Harmony'

[New Harmony Elm]

'New Harmony' is a cultivar of American elm, it has a vigerous growth rate and a more narrow vase shape than other varieties. It has great disease tolerance of Dutch Elm Disease (DED).

Ulmus davidiana var Japonica 'Morton' [sold as Accolade®]

[Accolade Elm]

Very good resistance to the Dutch elm disease pathogen, Ophiostoma ulmi, which has led to the near extinction of the American Elm (Ulmus americana) in the U.S. Also has good resistance against phloem necrosis, elm leaf beetle, and leaf miner.

Ulmus davidiana var. japonica 'Prospector'

[Prospector Elm]

'Prospector' is a cultivar with an excellent resistance to Dutch elm disease (DED) and smaller than american varieties. It is fast growing and requires maintainance to keep its vase shape, but works well as a street tree. It has showy emerging leaves and a brilliant yellow fall color.

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 × '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.

Viburnum × burkwoodii

[Burkwood Viburnum]

Trouble-free plant tolerant of soils and pollution (except sulfur). Also, does not tolerate more severe drought. Very fragrant when in bloom, although to a lesser degree than Viburnum carlesii (Koreanspice Viburnum). Bacterial spot and powdery mildew susceptibility (but not always a problem). Sulfur containing pesticides burn or defoliate leaves. Too thin to be a solid screen.

Viburnum × burkwoodii 'Chenaultii'

[Chenault Burkwood Viburnum]

'Chenaultii' has a finer-textured, more delicate appearance than the species type due to its smaller leaves and thinner branches. Trouble-free plant tolerant of soils and pollution (except sulfur). Also, does not tolerate more severe drought. Very fragrant when in bloom, although to a lesser degree than Viburnum carlesii (Koreanspice Viburnum). Bacterial spot and powdery mildew susceptibility (but not always a problem). Sulfur containing pesticides burn or defoliate leaves. Too thin to be a solid screen.

Viburnum × burkwoodii 'Compact Beauty'

[Compact Beauty Burkwood Viburnum]

Viburnum carlesii

[Koreanspice Viburnum]

Very fragrant when in bloom. Bacterial leaf spot can be a problem in some settings. Prune immediately after flowering for best flower show the next year.