The Chinese elm cultivar Ulmus parvifolia 'Dynasty' is a United States National Arboretum introduction resulting from a controlled crossing of two trees of Korean origin.Santamour, Frank S.; Bentz, Susan E. (May 1995). 'Updated Checklist of Elm (Ulmus) Cultivars for use in North America', Journal of Arboriculture. 21 (3); pp.122–131. First described in 1984,F.S. Santamour, Jr., U. parvifolia 'Dynasty' in HortScience 19:898- 899,1984 it is reputed to be very fast-growing.HortScience, Vol. 19, 898–899. (1984)
Description A medium tree rarely exceeding 13 m in height, with a spread of similar dimension producing a very rounded shape. Opinions of the tree's aesthetic merit vary; Dirr considered that the tree "borders on a boondoggle",Dirr, M. A. (1998). Manual of Woody landscape Plants. Stipes Publishing LLC, Champaign, Illinois whereas Warren and Jacobson thought the shape "good", and the foliage a decent autumn colour (the leaves turn orange-yellow).Warren, K. (2000). The return of the elm: status of elms in the nursery industry. In: Dunn, C. P. (Ed.), The Elms, Kluwer Academic Publishers, Boston.Jacobson, A. L. (1996). North American Landscape Trees. Ten Speed Press, Berkeley, CA.
Pests and diseases The species and its cultivars are highly resistant, but not immune, to Dutch elm disease, and unaffected by the elm leaf beetle Xanthogaleruca luteola. Moreover, the tree's foliage was adjudged "resistant" to black spot by the Plant Diagnostic Clinic of the University of Missouri .
Cultivation The tree is largely limited to North America, although it has been introduced to Italy.
Accessions
North America Bartlett Tree Experts, US. Acc. nos. 87-1060/1/2, 2004-326, 2004-336 Dawes Arboretum, Newark, Ohio, US. 1 tree, accession number 1997-0638.001.U. parvifolia 'Dynasty', Dawes Arboretum; dawesarb.arboretumexplorer Missouri Botanical Garden, St. Louis, Missouri, US. Acc. nos. 1986-1899, 1986-0901. Scott Arboretum, US. Acc. no. 97-689 Smith College, US. Acc. nos. 2102, 4903 U S National Arboretum , Washington, D.C., US. Acc. no. 63502 J.C. Raulston Arboretum, North Carolina State University, Raleigh, North Carolina, US.
Nurseries
North America
Boyd Coffey & Sons, Nurseries, Inc. Lenoir, North Carolina, US. Sun Valley Garden Centre , Eden Prairie, Minnesota, US.
Europe UmbraFlor , Spello, Italy. As Ulmus 'Dinasty'. Van Den Berk (UK) Ltd., , London, UK
References
External links http://www.ces.ncsu.edu/depts/hort/consumer/factsheets/trees-new/cultivars/ulmus_parvifolia.htm Ulmus parvifolia cultivar list. https://web.archive.org/web/20030413074605/http://fletcher.ces.state.nc.us/programs/nursery/metria/metria11/warren/elm.htm Return of the Elm - the status of elms in the nursery industry in 2000. Warren, K., J. Frank Schmidt and Co.