TREES & plants

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
Tree or Plant Type: 
  • Tree
Foliage: 
  • Deciduous (seasonally loses leaves)
Native Locale: 
  • Non-native
Planting Site: 
  • Residential and parks, 
  • City parkway, 
  • Wide median, 
  • Restricted sites
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).

Ulmus 'Morton Glossy' or TRIUMPH™ elm