Ulmus 'Amsterdam'

Ulmus 'Amsterdam'
Ulmus 'Amsterdam'
GenusUlmus
Hybrid parentage'Bea Schwarz' × U. minor
Cultivar'Amsterdam'
OriginBaarn, 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]

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.

Etymology

Named for the city of Amsterdam.

Accessions

Europe

Nurseries

Europe

References