What Is the Spread of a Siberian Elm?

Spread

• The spread of a Siberian elm tree (Ulmus pumila) reaches between 35 and 50 feet with a rounded canopy and drooping branches, accentuated by green leaves that grow to between two and three inches long before turning yellow in the fall. This deciduous tree reaches a height of 40 to 60 feet and is considered to be a fast-growing specimen. According to the Arbor Day Foundation, this denotes a tree that grows in excess of 24 inches annually.

Canopy Features

• The canopy spread of the Siberian elm is dotted by green flowers that gather in small clusters and later produce flat seedpods of one-half inch in length that mature in early summer. The foliage density within the crown is moderate and the droopy branches and thin twigs are susceptible to breakage as they hang down toward the lone trunk of the tree. Thorns are prevalent throughout the canopy spread.

Environment

• Due to its brittle nature and susceptibility to damage during storms, the Siberian elm is not an ideal specimen for planting in urban landscapes. Branches regularly drop from older trees and the litter of twigs on the ground is significant. Improper pruning techniques also contribute to the weakness of the wood. The tree enjoys full sunshine and well-drained soil. It possesses some tolerance to drought and grows nicely in clay, sandy and alkaline soil.

Hardiness Zones

• The potential spread of a Siberian elm is enhanced when it grows in its ideal geographic range. The tree is considered to thrive best in U.S. Department of Agriculture Hardiness Zones 5a through 9b. It quickly invades reclamation spots and open-field areas, forming dense thickets full of hundreds of saplings. In its native Asian habitat, the Siberian elm lives to in excess of 100 years. However, in the U.S., that number is substantially lower; typically the tree survives to an age of 50 to 60 years.