Content Detail

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.

  • Family (English) Elm
  • Family (botanic) Ulmaceae
  • Planting site City parkway, Residential and parks, Restricted sites, Wide median
  • Tree or plant type Tree
  • Foliage Deciduous (seasonally loses leaves)
  • Native locale Non-native
  • 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
  • Tolerances Alkaline soil, Clay soil, Dry sites, Occasional drought, Road salt
  • Season of interest early fall, mid fall
  • Flower color and fragrance Inconspicuous
  • Shape or form Vase-shaped
  • Growth rate Fast
  • Transplants well Yes
  • Wildlife Migrant birds
  • Has cultivars NA

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).

Tree and 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.

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