Ulmus × hollandica 'Groeneveld'

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Ulmus × hollandica
'Groeneveld', Brighton, UK
Hybrid parentage
U. glabra × U. minor
Cultivar
'Groeneveld'
Origin
Netherlands

Ulmus × hollandica 'Groeneveld' was cloned in 1949 and released in 1960 alongside 'Commelin' in response to the earlier, less virulent form of Dutch elm disease that afflicted Europe shortly after the First World War ^[1] ^[2]. Derived from a crossing of an English Wych Elm U. glabra and a French Smooth-leaved Elm U. minor subsp. minor, it produces a dense, upswept growth that initially made it popular as a street tree in the Netherlands ^[3]; it was also introduced elsewhere in Europe, including Britain, in small numbers. It has good resistance to Coral-spot fungus Nectria cinnabarina but, like all the other Dutch hybrids released before 1989, it proved to have only marginal resistance to the later, virulent form of Dutch elm disease and consequently planting is no longer recommended ^[4] ^[5]. The tree was planted in trials [1] in Canberra, Australia started in 1988, but has not shown promise in that environment so far; it has however proved popular in New Zealand.

1 Arboreta etc. accessions
- 1.1 North America
- 1.2 Europe
2 Nurseries
- 2.1 Europe
- 2.2 Australasia
3 References

[edit] Arboreta etc. accessions

[edit] North America

Holden Arboretum acc. no. 70-127
Morton Arboretum acc. no. 76-72

[edit] Europe

Brighton & Hove City Council, UK,NCCPG Elm Collection [2], UK champion: Stanmer Park, 18 m high, 53 cm d.b.h. in 2002 ^[6].
Royal Botanic Garden Wakehurst Place acc. no. 1975-6125
Sir Harold Hillier Gardens acc. no. 1977.6442

[edit] Nurseries

[edit] Europe

Brian Lewington [3], Heathfield, East Sussex, UK.
Bellwood Trees, Meigle, Perthshire, Scotland, UK. [4]
De Reebock [5], Zwalm, Belgium.
Westerveld Boomkwekerij B.V.[6], Opheusden, Netherlands.

[edit] Australasia

Productive Trees Ltd. [7], Paeroa, Waikato, New Zealand.

[edit] References

^ Burdekin, D. A. & Rushforth, K. D. (Revised by Webber J. F. 1996). Elms resistant to Dutch elm disease. Arboricultural Research Note 2/96. Arboricultural Advisory and Information Service, Alice Holt, Farnham, UK.
^ Santamour, F. S., & Bentz, S. E. (1995). Updated checklist of elm (Ulmus) cultivars for use in North America. Journal of Arboriculture, 21(3): May, 1995.
^ White, J. & More, D. (2002). Trees of Britain & Northern Europe. Cassell's, London.
^ Heybroek, H. M. (1964). Plant Disease Rep. 48: 187-189, 1964, transl. by F. W. Holmes.
^ Heybroek, H. M. (1993). The Dutch Elm Breeding Program. In Sticklen & Sherald (Eds.) (1993). Dutch Elm Disease Research, Chapter 3. Springer Verlag, New York, USA
^ Johnson, Owen (ed.) (2003). Champion Trees of Britain & Ireland. Whittet Press, ISBN 9781873580615