Ulmus parvifolia 'Dynasty'

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. First described in 1984, it is reputed to be very fast-growing.

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", whereas Warren and Jacobson thought the shape "good", and the foliage a decent autumn colour (the leaves turn orange-yellow).

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 https://web.archive.org/web/20080920051358/http://soilplantlab.missouri.edu/plant/diseases/resistant.htm.

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.
• 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 http://www.usna.usda.gov/index.htm, 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 http://www.qscaping.com/NetPS-Engine.asp?CCID=20000011&page=results&Keyword=ulmus&Category=&Type=&Spread=Any&SpreadDim=feet&Growth=&Hardiness=7&Height=Any&HeightDim=feet&Canopy=&Application=&Texture=&Wildlife=&Form=&Density=&FlowerColor=&FlowerColorJS=&FoliageColor=&FoliageColorJS=&FallColor=&FallColorJS=&FruitPeriod=&BarkColor=&BarkColorJS=&FlowerPeriod=&Variegation=&VariegationJS=&FruitColor=&FruitColorJS=&Edible=&BarkTexture=&SunShade=&Moisture=&Pollution=&SoilType=&pH=&Submit=Search , Eden Prairie, Minnesota, US.

Europe

• UmbraFlor http://www.umbraflor.it, Spello, Italy. As Ulmus 'Dinasty'.
• Van Den Berk (UK) Ltd., https://www.vdberk.co.uk/trees/?search=ulmus&sort=0&page=2, 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.