Den Haag (elm cultivar)

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Ulmus Den Haag
Hybrid parentage
U. pumila × U. × hollandica 'Belgica'
Cultivar
Den Haag
Origin
The Netherlands

The hybrid cultivar Den Haag is a Dutch development derived from a crossing of the Siberian Elm U. pumila and U. × hollandica Belgica by S. G. A. Doorenbos in 1936. The tree is of modest proportions, achieving a maximum height of 6m, and is distinguished by its foliage, creamy-white on emergence, turning lime-green and ultimately deep green by midsummer. 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.

Contents 1 Arboreta etc. accessions 1.1 North America 1.2 Europe 2 Nurseries 2.1 North America 2.2 Europe 2.3 Australasia 3 Etymology 4 Synonymy 5 References

[edit] Arboreta etc. accessions

[edit] North America

None known.

[edit] Europe

• Brighton & Hove City Council, UK, NCCPG elm collection [1]

[edit] Nurseries

[edit] North America

None known.

[edit] Europe

• Kwekerij De Reebock [2], Zwalm, Belgium.

[edit] Australasia

• Big Trees [3], Nelson, New Zealand.

[edit] Etymology

The tree is named for the city of Den Haag (known as The Hague in English).

[edit] Synonymy

• Ieplaan: old (original?) name for Ulmus × Den Haag.
• Ulmus pumila Den Haag: various authorities.

[edit] References

• Heybroek, H. M. (1986). Tuin en Landschap, 8(12): 19, 1986.
• Santamour, F. S., & Bentz, S. E. Updated checklist of elm (Ulmus) cultivars for use in North America. Journal of Arboriculture, 21(3): May, 1995.