Ulmus Morton – Accolade™ Elm


Botanical Name: Ulmus Morton

The Accolade Elm (Ulmus Morton) is a vigorous growing medium to large sized deciduous tree with a vase-shaped growth habit. The branches have an upward growth habit with elegant arching. It grows to a height of 50-60 feet with a spread of 25-40 feet.

This elm is a selection from the Chicagoland Grows® program. It is a cross between Ulmus japonica (Japanese Elm) and Ulmus wilsoniana (Wilson’s Elm). This hybrid was first planted at the Morton Arboretum in Illinois in 1924.

The leaves are oval to elliptical in shape and an attractive shiny, dark green. They measure 4 inches long and 2 inches wide with serrated margins and the asymmetrical leaf base typical of elm leaves. The leaves put on a showy fall display turning bright shades of yellow.

The flowers are green, small, and inconspicuous – like those of most elm trees. They bloom in March before the leaves grow in. The fruits are single-seeded, oval winged samaras that mature in April or May. The gray bark is gray with brown colored furrows and gray ridges.

Accolade Elm is tolerant of dry or wet soils as well as urban pollution – making it a good selection for a street tree. It has good resistance to Dutch Elm disease, the elm leaf beetle, and the elm leaf miner.

Product Dimensions

The purchased tree will be within the ranges below. If you require a specific size, please call us at (503)585-8337
Please review Product shipping dimensions to ensure size of vehicle used for pickup of tree is sized correctly. Click here for more information.
Caliper Range p
1 3/4"-3"
Height Range p


Flower Color

Flowering Time


Fall Color

Growth Rate


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Height: 50-60 ft.
Width: 25-40 ft.
Shape: Vase
Flower Color: Green
Flowering Time: March-April
Fall Color: Yellow
Features: Bright fall color, adaptable street tree
Exposure: Full Sun to Part Sun
Watering: Moderate & Regular
Soil: Prefers rich, moist loam, but is adaptable to dry and wet soils.
Growth Rate: Fast
USDA Zones: 4-9
Uses: Shade tree, street tree, park tree
Similar Trees: New Horizon Elm (Ulmus ‘New Horizon’), Princeton Elm (Ulmus americana ‘Princeton’), Prospector Elm (Ulmus x wilsoniana ‘Prospector’), Frontier Elm (Ulmus x carp. ‘Frontier’), Accolade™ Elm (Ulmus ‘Morton’ ), Triumph™ Elm (Ulmus ‘Morton Glossy’)

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