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The American Homestead elm is a complex hybrid developed by the U. S. National Arboretum from the crossing of Siberian Elm U. pumila with (Commelin × (U. pumila × U. minor 'Hoersholmiensis')). It rapidly produces very upright growth culminating in a pyramidal crown, with dark foliage that turns yellow in autumn. Its ultimate height should be approximately 20 m, with a spread of 12 m. Homestead has a high resistance to Dutch elm disease, but proved intolerant of hot and arid conditions in eastern Arizona, where it exhibited a high degree (> 50 %) of dieback in trials conducted by Northern Arizona University [1]. Homestead has had a very limited introduction to Europe. Experimental plantings were made along streets in several Dutch towns in the late 1990s. The tree also featured in trials in New Zealand during the 1990s at the Hortresearch station, Palmerston North.
[edit] Arboreta etc. accessions
[edit] North America
[edit] Europe
[edit] Nurseries
[edit] North America
[edit] Europe
None known.
[edit] References
- Burdekin, D. A. & Rushforth, K. D. (Revised by Webber J. F. 1996). Elms resistant to Dutch elm disease. Arboricultural Research Note 2/96. Arboricultural Advisory and Information Service, Alice Holt, Farnham, UK.
- Santamour, J., Frank, S. & Bentz, S. (1995). Updated checklist of elm (Ulmus) cultivars for use in North America. Journal of Arboriculture, 21:3 (May 1995), 121-131. International Society of Arboriculture, Champaign, Illinois, USA.
- Townsend, A. M. & Masters, W. O., HortScience, 19: 897-898, 1984.
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