The Elm tree has 45 species including some semi-evergreen trees and a few shrubs. They are native to northern areas and are grown for their attractive foliage. The Elm Tree grows well in well-drained soil in sun or semi-shade. Summer budding is the main method of propagation.
The American White Elm is a gracefully spreading tree from the eastern USA, the species is often multi-stemmed with large V-Shaped trunks and covered with silver bark. The dark green leaves are heavily toothed and turn butter yellow in autumn. It is still widespread in the US. The cultivar “American Liberty” has an upright habit and it shows great resistance to the Dutch Elm disease (DED).
In tests the “Valley Forge” species had good autumn color and has been shown to have the greatest resistance to disease of all the American Elms.
The Dutch Elm tree is broadly columnar with toothed dark green leaves that turn yellow in autumn. Small red flowers are borne in spring, followed by winged fruits. The Dutch elm tree loves full sun and is not resistant to the Dutch elm disease.
The Chinese Elm tree is a spreading tree with glossy dark green leaves which can turn orange-yellow in autumn, but which often persist into winter. The grey-brown bark flakes to reveal the light brown underbark. This species does not appear to be affected by DED.
Other varieties include the Patriot, Siberian Elm, Sapporo Autumn Gold and the Urban Elm tree.
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