Ulmus 'Amsterdam'

Ulmus 'Amsterdam' is a Dutch cultivar raised at the Huis Groeneveld in Baarn 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's horticulture department.

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.

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.

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

Europe

 * Noordplant, Glimmen, Netherlands.