Ulmus 'Morton Red Tip'
From Wikipedia, the free encyclopedia
| Ulmus hybrid |
|---|
 'Red Tip' leaves |
| Hybrid parentage |
| U. davidiana var. japonica × U. davidiana var. japonica f. wilsoniana |
| Cultivar |
| 'Morton Red Tip'
Danada Charm™ |
| Origin |
| USA |
The hybrid cultivar 'Morton Red Tip' (Danada Charm™) is another Morton Arboretum selection, derived from an open pollination of the 'Morton' Accolade™ hybrid. The tree has a graceful, vase-shaped habit and its foliage is tinged red on emergence. Morton Red Tip is also cold hardy; in artificial freezing tests at the arboretum [1] the LT50 (temp. at which 50% of tissues die) was found to be - 31 °C. However, although also highly resistant to Dutch elm disease, 'Morton Red Tip' (Danada Charm™) is very susceptible to the elm leaf beetle and Gypsy moth; it is also moderately preferred by cankerworms [2] [3].
Moreover, the tree is notorious for its stem breakage owing to narrow crotch angles and included bark; in trials at the University of Minnesota it had the unhappy distinction of being the worst of 17 cultivars for breakage [4]. The tree is currently being evaluated in the National Elm Trial [1] coordinated by Colorado State University.
'Morton Red Tip' (Danada Charm™) is being promoted by the Chicagoland Grows corporation, but is not widely available in the USA. It is not known (2008) to have been introduced to Europe or Australasia.
Contents |
[edit] Arboreta etc. accessions
- North America
- Brenton Arboretum, Dallas Center, Iowa. No details available.
- Chicago Botanic Garden, Glencoe, Illinois. 2 trees, no other details available.
- Dawes Arboretum [2], Newark, Ohio. 2 trees, no acc. details available.
[edit] Nurseries
- North America
[edit] Etymology
Danada Charm ™ is named for the Daniel F. & Ada L. Rice Foundation which helped sponsor the elm breeding programme at the Morton Arboretum.
[edit] References
- ^ Shirazi, A. M. & Ware, G. H. (2004). Evaluation of New Elms from China for Cold Hardiness in Northern Latitudes. International Symposium on Asian Plant Diversity & Systematics 2004, Sakura, Japan.
- ^ Guries, R. P. & Smalley, E. B., (1986), Proc. Third Nat. Urban Forestry Conf., pp 214–218, 1986, Orlando, Florida.
- ^ Santamour, F. S., & Bentz, S. E. Updated checklist of elm (Ulmus) cultivars for use in North America. Journal of Arboriculture, 21(3): May, 1995.
- ^ Giblin, C. P. & Gillman, J. H. (2006). Elms for the Twin Cities: A Guide for Selection and Maintenance. University of Minnesota.
[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.
- http://www.mortonarb.org/plantinfo/plantclinic/phc/New-Elms-For-The-Landscape.pdf. Miller, F. (2002). New elms for the landscape and urban forest.
