New Horizon Elm
Botanical Name: Ulmus ‘New Horizon’
The New Horizon Elm tree (Ulmus ‘New Horizon’) is a medium sized deciduous tree with a fast growth rate – increasing twig size quickly. However, it is unusual in that it is slow to grow vertically. It has an upright, pyramidal growth habit with slightly arching branches and compact, dense foliage. This tree has a slightly finer texture than most other elms.
The leaves of the Triumph™ Elm are glossy, oval shaped, and dark green. They measure 3-4 inches long and have doubly serrated margins, with the asymmetrical leaf base typical of elm leaves. The leaves turn shades of yellow and red in the fall but the display is not showy.
The flowers of the New Horizon Elm are small, green, and inconspicuous – typical of elm trees. They emerge in spring before the leaves unfurl. The fruits are delicate, paper-like samaras that contain a single seed and develop in April or May. The bark is gray.
This elm tree is tolerant of pollution and drought, growing well in a variety of urban sites and soil conditions. It has good resistance to Dutch Elm disease, the elm leaf miner, and verticillium wilt but can be susceptible to the elm leaf beetle.
Height: 30-40 ft.
Width: 20-25 ft.
Flower Color: Green
Flowering Time: March-April
Fall Color: Yellow, Red
Features: Tolerant of urban conditions, good shade tree
Exposure: Full Sun to Part Shade
Watering: Moderate & Regular
Soil: Prefers rich, moist, well-drained loam soil, but is adaptable to wet and dry conditions.
Growth Rate: Fast
USDA Zones: 4-9
Uses: Shade tree, street tree, lawn tree
Similar trees: Ulmus americana 'Princeton' (Princeton Elm), Ulmus x wilsoniana 'Prospector' (Prospector Elm), Ulmus x carp. 'Frontier'(Frontier Elm), Ulmus ‘Morton Glossy’ (Triumph Elm), Ulmus ‘Morton’ (Accolade Elm)