Ulmus × hollandica 'Wredei'

Ulmus × hollandica
'Wredei', Stadspark, Groningen.
Hybrid parentage	U. glabra × U. minor
Cultivar	'Wredei'
Origin	Germany

The hybrid elm cultivar Ulmus × hollandica 'Wredei' originated as a sport of the cultivar 'Dampieri' at the Alt-Geltow Arboretum, near Potsdam, Germany, in 1875. ^{[1] [2]}

Description

The tree is fastigiate when young, but like its parent 'Dampieri' can become more spreading with age.^[3] It has broad, crinkled leaves clustered on short shoots; when these are young they are suffused yellow, but as the tree ages they revert to green.

Pests and diseases

'Wredei' is susceptible to Dutch elm disease.

Cultivation

Commonly known as the Golden Elm, 'Wredei' is currently one of the most popular elms on sale in Europe owing to its colourful foliage and modest size. In the UK, the TROBI Champion is at Blaker's Park, Brighton, measuring 17 m high and 57 cm d.b.h. in 2009, when the leaf colour was reverting to green.^[4]

Etymology

The tree is named for Joseph Wrede (1831–1912), Royal Horticultural Inspector at the Royal State Nursery, Alt-Geltow, Potsdam, and curator of the Alt-Geltow Arboretum.^[5]

Synonymy

• Ulmus campestris 'Wredei' Hort. ex Lauche, Deutsch. Dendr. 347 (1880).
• Ulmus carpinifolia var. Dampieri f. Wredei Juhlke
• Ulmus dampieri 'Wredei': Krüssmann, in Parey's Blumengartn, ed. 2.1: 519, 1958.
• Ulmus dampieri var. Wredei: Juhlke , in Hamburg Gart.- & Blumenzeit, 33: 485, 1877.
• Ulmus Dippeliana f. Wredei (Hort.) Schneider, Ill. Handb. Laubholzk. 1: 218, fig. 136p (1904).
• Ulmus × hollandica 'Dampieri Aurea'
• Ulmus montana var. Dampieri aurea Wrede ex Jaeger & Beissner , Ziergeh. ed. 2, 403 (1884).
• Ulmus montana var. Dampieri Wredei Ruempler, Gartenbau-Lex. 930(1890). - Rehder in Miller's Deutsch Gartn.-Zeit. 13: 160, fig. (1898).
• Ulmus montana var. fastigiata aurea Hort. ex Nicholson Kew Hand-list Trees Shrubs, 2: 141 (1896).
• Ulmus scabra var. Dampieri var. Wredei (Juhlke) Hartwig Ill. Geholzb. 393 (1892).
• Ulmus nitens f. Wredei Rehder in Mitt. Deutsch. Dendr. Ges. 24(1915): 218 (1916).
• Ulmus foliacca var. Wredei Rehder in Bailey, Stand. Cvcl. Hort. 6: 3413 (1917).
• Ulmus Wreedi aurea: Leach, ex Jour. Roy. Hort. Soc., 16: lxi, 1893.

Accessions

North America

• Dominion Arboretum, Canada. No details available.
• Morton Arboretum, Illinois. Acc. no. 269–57 (as Smooth-leaved Elm, U. carpinifolia 'Wredei') ^[6]

Europe

• Grange Farm, Sutton St. James, Spalding, Lincolnshire, England. Acc. no. 525 (as Ulmus wredei 'Aurea')
• Hortus Botanicus Nationalis, Salaspils, Latvia. Acc. no. 18119 (as U × hollandica 'Dampieri Aurea')
• Royal Horticultural Society Gardens, Wisley. No details available.
• South Park Gardens, Wimbledon, London. UK champion: 14 m high, 59 cm d.b.h. in 2001.^[4]
• University of Copenhagen Botanic Gardens. No details available.
• NCCPG Collection, Brighton & Hove, UK. Old tree in Blaker's Park; newly planted trees at Wild Park and Withdean.
• Wijdemeren City Council, Netherlands, Elm collection. 2 planted (around 1980) playground Rembrand van Rijnlaan, Loosdrecht.

Australasia

• Ballarat Botanical Gardens, listed on the Significant Tree Register of the National Trust.
• Eastwoodhill Arboretum , Gisborne, New Zealand. One tree (as U. minor 'Wredei'), details not known.

Nurseries

Widely available.

References

1. Elwes, H. J. & Henry, A. (1913). The Trees of Great Britain & Ireland. Vol. VII. 1848–1929. Republished 2014 Cambridge University Press, ISBN 9781108069380
2. Green, P. S. (1964). Registration of cultivar names in Ulmus. Arnoldia, Vol. 24. Arnold Arboretum, Harvard University.
3. Photograph of 'Wredei' beginning to lose its fastigiate outline
4. Johnson, Owen (ed.) (2003). Champion Trees of Britain & Ireland. Whittet Press, ISBN 978-1-873580-61-5
5. Gartenkultur in Brandenburg und Berlin. Herausgegeben vom Ministerium für LUR des Landes Brandenburg.
6. U. carpinifolia 'Wredei' at Moreton Arboretum, Tree Family Ulmaceae