Cultivar 'Zettler' = Heritage™ | Origin USA | |
The Chinese Elm cultivar Ulmus parvifolia 'Zettler' (selling name Heritage™) [1] is one of three recent (< 2006) American introductions selected for their cold hardiness (USA zone 4 tolerant).
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Description
Heritage has a strong, upright habit and excellent branching structure, bearing deep green glossy foliage that turns to an attractive autumn colour in some years.
Pests and diseases
The species and its cultivars are highly resistant, but not immune, to Dutch elm disease, and unaffected by the Elm Leaf Beetle Xanthogaleruca luteola [2].
Cultivation
Heritage was selected from over 20,000 seedlings in 1975, and subsequently proved to be one of the hardiest Chinese or Lacebark Elms available in the USA, surviving - 33° C (- 27° F) in Illinois during the winter of 1989 without sustaining any damage whatsoever. Heritage is not known to have been introduced to Europe or Australasia.
Accessions
None known.