French
DeutschUlmus parvifolia 'Zettler'
| Ulmus parvifolia 'Zettler' | |
|---|---|
| Species | Ulmus parvifolia |
| Cultivar | 'Zettler' = Heritage |
| Origin | US |
Ulmus parvifolia 'Zettler' (selling name Heritage)[1] is a Chinese Elm cultivar that is one of three[clarification needed] recent[timeframe?] (< 2006) American introductions selected for their cold hardiness (USA zone 4 tolerant).
Description[edit]
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[edit]
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[edit]
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 United States, 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[edit]
None known.
Nurseries[edit]
- North America
References[edit]
- ^ "Elms". Archived from the original on 2006-11-14. Retrieved 2007-02-01.
- ^ "Elm Leaf Beetle Survey". Archived from the original on 2011-07-19. Retrieved 17 July 2017.
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