''Ulmus'' 'Amsterdam' is a Dutch
cultivar
A cultivar is a kind of Horticulture, cultivated plant that people have selected for desired phenotypic trait, traits and which retains those traits when Plant propagation, propagated. Methods used to propagate cultivars include division, root a ...
raised at the
Huis Groeneveld in
Baarn
Baarn () is a municipality and a town in the Netherlands, near Hilversum in the province of Utrecht (province), Utrecht.
The municipality of Baarn
The municipality of Baarn consists of the following towns: Baarn, Eembrugge, Lage Vuursche.
T ...
from a crossing of the early cultivar
'Bea Schwarz' with another French
''U. minor'' by
Hanneke Went in 1942 and introduced by Albert Hoekstra, former director of
Amsterdam
Amsterdam ( , ; ; ) is the capital of the Netherlands, capital and Municipalities of the Netherlands, largest city of the Kingdom of the Netherlands. It has a population of 933,680 in June 2024 within the city proper, 1,457,018 in the City Re ...
's horticulture department.
[Tijdgat, M. (2020): Ulmus – Gebruikswaarde- en sortimentsonderzoek in de praktijk. ''Dendroflora'' Nr. 56-2020, p.73 Koninklijke Vereniging voor Boskoopse Culturen & Nederlandse Dendrologische Vereniging]
/ref>
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.[
File:Trunk base, elm cultivar in Weesperstaat.JPG, Trunk base
File:Ulmus Amsterdam leaves.jpg, 'Amsterdam' leaves
]
Pests and diseases
The tree has a moderate resistance to Dutch elm disease, rated as 3/5.[
]
Cultivation
'Amsterdam' is perceived to be a tree 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. [ The tree is little known beyond the Netherlands.
]
Etymology
Named for the city of Amsterdam.
Accessions
Europe
*Grange Farm Arboretum
The Grange Farm Arboretum is a small private arboretum comprising 3 hectares accommodating over 800 trees, mostly native and ornamental species or cultivars, notably oaks, ashes, walnuts and elms, growing on a calcareous loam.Ostler, J. (2009) ...
, Sutton St. James
Sutton St James is a village and civil parish in the South Holland district of Lincolnshire, England, about south-west of Long Sutton.
Lying in the Lincolnshire Fens, Sutton St James did not exist at the time of the 1086 ''Domesday Book''. Su ...
, Spalding, Lincs., UK. Acc. no. 815.
*Sir Harold Hillier Gardens
The Sir Harold Hillier Gardens is an arboretum comprising 72 hectares (180 acres) accommodating over 42,000 trees and shrubs in about 12,000 taxa, notably a collection of oaks, camellia, magnolia and rhododendron.
The Gardens are located north ...
, UK. One specimen bordering Crookhill overflow parking area. Acc. no. 2017.0371
Nurseries
Europe
*Noordplan
Glimmen
Glimmen is a village in the northeastern Netherlands. It is located in the municipality of Groningen, about 10 kilometres from the city. It had a population of around 1,342 in 2021. The river Drentsche Aa flows past the village, nearby the ''Huis t ...
, Netherlands.
References
{{Elm species, varieties, hybrids, hybrid cultivars and species cultivars , state=collapsed
Hybrid elm cultivar
Ulmus articles with images