Ulmus 'Rebona'
Elm cultivar
From Wikipedia, the free encyclopedia
Ulmus 'Rebona' is an American hybrid cultivar raised by the Wisconsin Alumni Research Foundation (WARF) as selection 'W916', derived from a crossing of Japanese Elm clone W43-8 = 'Reseda' with Siberian Elm clone W426 grown from seed collected from a street tree at Yankton, South Dakota.[1] The tree was registered in 1993 by Conrad Appel KG, of Darmstadt (ceased trading 2006) and is a sibling of 'New Horizon' (selection 'W917'). In Europe, 'Rebona' is marketed as a Resista elm[2] protected under E U breeders' rights (E U council decision 2100/94).
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| Ulmus 'Rebona' | |
|---|---|
'Rebona', Treskowstrasse, Heinersdorf, Berlin (2014) | |
| Genus | Ulmus |
| Hybrid parentage | U. davidiana var. japonica × U. pumila |
| Cultivar | 'Rebona' |
| Origin | US |
Description
'Rebona' bears a close resemblance to its sibling 'New Horizon', but requires less maintenance owing to a better leader. The tree grows rapidly,[3] developing a fastigiate pyramidal shape with ascending branches. The glossy leaves (6 to 9 cm long by 3 to 5 wide) are described by Resista Ulmen as "a little smaller and darker" than those of 'New Horizon'.[3][4] The petiole is 10 to 15 mm long.[5][6] The seed is central in the samara.[7]
'Rebona' leaf
Young 'Rebona' (centre)
Pests and diseases
'Rebona' is highly resistant to Dutch elm disease, rated 5 out of 5.[4]
Cultivation
'Rebona' has been widely planted as a street tree in Germany, the Netherlands, and to a lesser extent France and the UK.[8] In the Netherlands lines of 'Rebona' were planted in the Parade in the centre of Den Bosch, North Brabant, in 2022.[9] Three stand near the entrance to Fenchurch Street Station, London.[10][11] The tree has never been offered for sale in the United States.
'Rebona' in spring, Treskowstrasse, Berlin-Heinersdorf (2012)
'Rebona' (left), Fenchurch Street Station, London (2019)
'Rebona' lining Utrechtsebaan, The Hague (September 2023)[12]
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Synonymy
- 'Rebone' [1]
Accessions
Europe
- Botanischer Garten Marburg, Marburg, Germany. No details available.
- Grange Farm Arboretum, Lincolnshire, UK. Acc. no. not known.
- Höxter Botanical Garden, Ostwestfalen-Lippe University of Applied Sciences, Höxter, Germany. Planted 2023[7]
- Royal Botanic Gardens, Kew, UK. Acc. no. not known.
- Sir Harold Hillier Gardens, Romsey, UK. One tree planted Crookhill overflow parking area. Acc. no. 2018.0019