Cultivar 'Hamburg' | Origin USA | |
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The hybrid elm cultivar Ulmus '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 pumila (female parent) and Ulmus americana. However it is now considered more likely that Ulmus rubra was the male parent.
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Description
'Hamburg' has been described as a hardy, very rapid grower, with much stronger branching than the Siberian Elm.
Pests and diseases
'Hamburg' had not (by 1995) been widely tested for resistance to Dutch elm disease.
Cultivation
Largely confined to the United States, several were introduced to the UK. The tree is not known to have been introduced to Australasia.