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.^[1] First described in 1984,^[2] it is reputed to be very fast-growing.^[3]

Ulmus parvifolia 'Dynasty'
Species	Ulmus parvifolia
Cultivar	'Dynasty'
Origin	US

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",^[4] whereas Warren and Jacobson thought the shape "good", and the foliage a decent autumn colour (the leaves turn orange-yellow).^[5][6]

• 
  Foliage of 'Dynasty', Raulston Arboretum (North Carolina State University)
• 
  Bark of 'Dynasty', Raulston Arboretum

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.^[7] 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.^[8]
• 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 ^{[dead link]}, 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 Archived 2016-03-04 at the Wayback Machine, Eden Prairie, Minnesota, US.

Europe

• UmbraFlor , Spello, Italy. As Ulmus 'Dinasty'.
• Van Den Berk (UK) Ltd., , London, UK