Ulmus 'Amsterdam'
| Ulmus 'Amsterdam' | |
|---|---|
Ulmus 'Amsterdam' | |
| Genus | Ulmus |
| Hybrid parentage | 'Bea Schwarz' × U. minor |
| Cultivar | 'Amsterdam' |
| Origin | Baarn, The Netherlands |
Ulmus 'Amsterdam' is a Dutch cultivar raised at the Huis Groeneveld in Baarn from a crossing by Hanneke Went in 1942 of the early cultivar Ulmus minor 'Bea Schwarz' with another French U. minor, and introduced by Albert Hoekstra, former director of Amsterdam's horticulture department.[1] In the Netherlands it is classified as Ulmus minor 'Amsterdam'.[1][2]
Description
'Amsterdam' is very slender growing in its youth, with rather small, light green leaves. Eventually it becomes a medium-sized tree with a narrow ovate crown. The leaves turn a rich yellow in autumn and remain attached to the tree for a period much longer than is normal for the genus. The tree is also distinguished by its trunk, which widens conspicuously at the base.[1]
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Trunk base
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'Amsterdam' leaves
Pests and diseases
The tree has a moderate resistance to Dutch elm disease, rated as 3/5.[1]
Cultivation
'Amsterdam' is perceived to be ideally suited to urban locations where trees of small size are preferred. The cultivar has had only a very limited impact on the Dutch townscape, largely restricted to the streets of Amsterdam, notably the Weesperstraat.[1] Among rural plantings in the Netherlands are three trees by the roundabout at the south end of the Iepenallee 's-Gravelandsevaartweg, Loosdrecht,[2][3] planted in 2019 as part of Wijdemeren City Council's elm collection, assembled since 2003 by tree manager Martin Tijdgat and his colleagues.[4][1][5] The tree is little known beyond the Netherlands.
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Line of 'Amsterdam' on the Sloterkade (2019)[6]
Etymology
Named for the city of Amsterdam.
Accessions
Europe
- Grange Farm Arboretum, Sutton St. James, Spalding, Lincs., UK. Acc. no. 815.
- Sir Harold Hillier Gardens, UK. One specimen bordering Crookhill overflow parking area. Acc. no. 2017.0371
Nurseries
Europe
References
- ^ a b c d e f Tijdgat, M. (2020): Ulmus – Gebruikswaarde- en sortimentsonderzoek in de praktijk. Dendroflora Nr. 56-2020, p.73 Koninklijke Vereniging voor Boskoopse Culturen & Nederlandse Dendrologische Vereniging
- ^ a b Hanneke Tax, 'Martin Tijdgat, bomenman van de gemeente Wijdemeren en iepenexpert', 25 May 2022; boomzorg.nl Contains north to south names-list.
- ^ Three 'Amsterdam' by the roundabout at the south end of the Iepenallee 's-Gravelandsevaartweg - Google Maps, September 2022, access date: 12 December, 2025
- ^ Iepenallee, ’s Gravelandsevaartweg, Loosdrecht, Netherlands: Bart Mullink, 'Bekering gemeente Wijdemeren tot de iep loopt als een trein', 23 August 2018; boomzorg.nl
- ^ Hanneke Tax, 'Iepenallee 's-Gravelandsevaartweg', 1 May 2023, boomzorg.nl
- ^ L. Goudzwaar, 'Het geslacht Ulmus - nieuwe mogelijkheden' (2008); edepot.wur.nl