Ulmus 'Homestead'
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| Ulmus hybrid |
|---|
| Hybrid parentage |
| U. pumila × ('Commelin' × (U. pumila × U. minor 'Hoersholmiensis')) |
| Cultivar |
| 'Homestead' |
| Origin |
| USA |
The American cultivar 'Homestead' is a complex hybrid developed by the United States National Arboretum from the crossing of Siberian Elm Ulmus pumila with ('Commelin' × (Ulmus pumila × Ulmus minor 'Hoersholmiensis')). It rapidly produces very upright growth culminating in a pyramidal crown, with dark foliage that turns yellow in autumn. The tree's ultimate height should be approximately 20 m, with a spread of 12 m [1] [2].
'Homestead' has a good 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]. Trials conducted by the University of Minnesota confirmed the tree's susceptibility to sun scorch, and also its vulnerability to cambial damage over winter, although neither failing appeared to affect its long term performance [3]. The tree is currently being evaluated in the National Elm Trial [2] coordinated by Colorado State University.
'Homestead' has had a limited introduction to Europe [4]; experimental plantings were made along streets in several Dutch cities, notably Beethovenstraat in Amsterdam, but many have since been replaced by 'Columella'. The tree also featured in trials in New Zealand during the 1990s at the Hortresearch station, Palmerston North.
Contents |
[edit] Arboreta etc. accessions
- North America
- Bartlett Tree Experts acc. nos. 2001-100/1/2
- Brooklyn Botanic Garden [3], New York, acc. no. 20040605.
- Denver Botanic Gardens no details available
- Holden Arboretum acc no. 90-57
- Louisville Arboretum [4] no details available
- Morton Arboretum acc. no. 964-2004
- New York Botanical Garden acc. nos. 1934/94, 954/97
- Smith College acc. no. 4403
- Europe
- Brighton & Hove City Council, UK, NCCPG Elm Collection [5]
[edit] Nurseries
- North America
- Acorn Farms [6], Galena, Ohio.
- Bailey Nurseries [7], St. Paul, Minnesota.
- Charles J. Fiore [8], Prairie View, Illinois.
- J. Frank Schmidt & Son Co. [9], Boring, Oregon
- Johnson's Nursery [10], Menomonee Falls, Wisconsin
- Europe
- Westerveld Boomkwekerij B.V.[11], Opheusden, Netherlands.
[edit] References
- ^ 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.
- ^ Giblin, C. P. & Gillman, J. H. (2006). Elms for the Twin Cities: A Guide for Selection and Maintenance. University of Minnesota.
- ^ 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.
[edit] External links
- http://fletcher.ces.state.nc.us/programs/nursery/metria/metria11/warren/elm.htm Warren, K., J. Frank Schmidt & Son Co. (2002). The Status of Elms in the Nursery Industry in 2000.
