Ulmus 'Den Haag'

The hybrid cultivar Ulmus 'Den Haag' is a Dutch development derived from a crossing of the Siberian Elm Ulmus pumila and the Belgian Elm Ulmus × hollandica 'Belgica' in 1936 by S. G. A. Doorenbos (1891-1980), Director of Public Parks in The Hague.

Description

The tree is distinguished by its pendent branches, and its foliage, which is creamy-white on emergence but turning lime-green and ultimately deep green by midsummer.

'Den Haag' leaf

'Den Haag' leaf

Den Haag', Sir Harold Hillier Gardens, UK

Den Haag', Sir Harold Hillier Gardens, UK

Pests and diseases

Although reputed to be moderately resistant to Dutch elm disease, drought, and frost, the tree has brittle branches, and is vulnerable to Coral-spot Fungus Nectria cinnabarina

Cultivation

The tree remains in commerce in the Netherlands and New Zealand. 'Den Haag' is not known to have been introduced to North America.

Notable trees

The UK TROBI Champion grows at Preston Park in Brighton, measuring 14 m high by 77 cm d.b.h. in 2009.