TRIUMPH™ elm

A mature specimen of TRIUMPH™ elm.

The TRIUMPH™ elm has very good resistance to Dutch elm disease (DED) and is resistant to elm yellows; it also has good resistance to elm leaf beetle. It is easily transplanted, quick to establish, and adaptable to most soil types. Large, lustrous, dark green summer foliage gives way to yellow fall color. Useful for home and commercial landscapes or parks or as street tree.

Botanical name:

Ulmus 'Morton Glossy'

All Common Names:

TRIUMPH™ elm

Family (English):

Elm

Family (Botanic):

Ulmaceae

Planting Site:

  • Residential and parks,
  • City parkway,
  • Wide median,
  • Restricted sites

Tree or Plant Type:

  • Tree

Foliage:

  • Deciduous (seasonally loses leaves)

Native Locale:

  • Non-native

Landscape Uses:

  • Parkway/street,
  • Shade tree,
  • Specimen

Size Range:

  • Large tree (more than 40 feet)

Mature Height:

50-60 feet

Mature Width:

35-40 feet

Light Exposure:

  • Full sun (6 hrs direct light daily),
  • Partial sun/shade (4-6 hrs light daily)

Hardiness Zones:

  • Zone 4,
  • Zone 5 (Chicago),
  • Zone 6,
  • Zone 7

Soil Preference:

  • Moist, well-drained soil

Acid Soils:

  • Tolerant

Alkaline Soils:

  • Tolerant

Salt Spray:

  • Moderately Tolerant

Soil Salt:

  • Moderately Tolerant

Drought Conditions:

  • Tolerant

Poor Drainage:

  • Tolerant

Ornamental Interest:

  • Fall color

Season of Interest:

  • Early fall,
  • Mid fall

Flower Color & Fragrance:

  • Inconspicuous

Shape or Form:

  • Vase-shaped

Growth Rate:

  • Fast

Transplants Well:

  • Yes

Wildlife:

  • Migrant birds

More Information:

Tree & Plant Care

Easily transplanted, quick to establish and regain rapid growth. Adaptable to most soil types unless excessively wet.
Avoid pruning elms during the growing season.

Disease, pests, and problems

Elm leaf miner, elm flea weevil and verticillium wilt are potential problems.

Disease, pest, and problem resistance

Very good resistance to Dutch elm disease and resistance to elm yellows; good resistance to elm leaf beetle.

Native geographic location and habitat

Of hybrid origin.

Bark color and texture 

Bark is gray, ridged and furrowed.

Leaf or needle arrangement, size, shape, and texture

Oval, pointed leaves have tooth-within-tooth margins. Leaf is shorter on one side of center vein than on the other. Leaves are dark green in summer, changing to yellow in fall.

Flower arrangement, shape, and size

Inconspicuous flowers in early spring.

Fruit, cone, nut, and seed descriptions

Seed in small oval samara (seed case with wings for wind dispersal).

Location of Ulmus 'Morton Glossy' (TRIUMPH™ elm) at the Arboretum