Ulmus 'Hamburg'

Ulmus
Details
Cultivar	'Hamburg'
Origin	USA

The hybrid cultivar 'Hamburg' was originally raised by the Plumfield Nurseries, Fremont, Nebraska, circa 1932, after its discovery by Mr. Lloyd Moffet in a bed of Siberian Elm Ulmus pumila seedlings from Tekamah. It was later marketed by Interstate Nurseries, Hamburg, Iowa, in 1948, and claimed to be a hybrid of Ulmus americana and Ulmus pumila ^[1]. However it is now considered more likely that Ulmus rubra was the American parent.

Contents 1 Description 2 Pests and diseases 3 Cultivation 4 Synonymy 5 Accessions 6 References

Description

'Hamburg' has been described as a hardy, very rapid grower, with much stronger branching than the Siberian Elm.^{[2] [3]}

Pests and diseases

'Hamburg' had not (by 1995) been widely tested for resistance to Dutch elm disease.^[2]

Cultivation

Largely confined to the USA, several were introduced to the UK. The tree is not known to have been introduced to Australasia.

Synonymy

• 'Hamburg Hybrid Elm': Interstate Nurseries, Hamburg, Iowa, Catalogue, Spring 1949.
• 'Hybrid Chinese Elm': Anon.

Accessions

North America

• Arnold Arboretum. Acc. nos. 520-53, 666-50.

Europe

• 1 tree stood on the Longbridge Road, Lullington. East Sussex, UK; but has died since.
• Exeter University Botanic Gardens, Exeter, Devon, UK. TROBI Champion, 17 m high, 55 cm d.b.h., listed as 'Hamburg Hybrid'.

References