The Chinese Elm Ulmus parvifolia cultivar 'Zettler' (Heritage) http://www.naplants.com/elms.htm is one of three recent (< 2006) American introductions selected for their cold hardiness (USA zone 4 tolerant).

Description

The tree 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

Dutch elm disease

Dutch elm disease is a disease caused by a member of the sac fungi category, affecting elm trees which is spread by the elm bark beetle. Although believed to be originally native to Asia, the disease has been accidentally introduced into America and Europe, where it has devastated native...

, and unaffected by the Elm Leaf Beetle Xanthogaleruca luteola

Xanthogaleruca luteola

Xanthogaleruca luteola, commonly known as the Elm Leaf Beetle, is a serious pest of the elm. Indigenous to Europe, it was accidentally introduced to North America. Both the imagines and larvae feed on the emergent leaves of the elm...

http://www.sunshinenursery.com/survey.htm.

Cultivation

'Zettler' was originally 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

Celsius

Celsius is a scale and unit of measurement for temperature. It is named after the Swedish astronomer Anders Celsius , who developed a similar temperature scale two years before his death...

 (- 27° F

Fahrenheit

Fahrenheit is the temperature scale proposed in 1724 by, and named after, the German physicist Daniel Gabriel Fahrenheit . Within this scale, the freezing of water into ice is defined at 32 degrees, while the boiling point of water is defined to be 212 degrees...

) in Illinois

Illinois

Illinois is the fifth-most populous state of the United States of America, and is often noted for being a microcosm of the entire country. With Chicago in the northeast, small industrial cities and great agricultural productivity in central and northern Illinois, and natural resources like coal,...

 during the winter of 1989 without sustaining any damage whatsoever. 'Zettler' (Heritage) is not known to have been introduced to Europe

Europe

Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...

 or Australasia

Australasia

Australasia is a region of Oceania comprising Australia, New Zealand, the island of New Guinea, and neighbouring islands in the Pacific Ocean. The term was coined by Charles de Brosses in Histoire des navigations aux terres australes...

.

Nurseries

North America

• North American Plants http://www.naplants.com/elms.htm, Lafayette
  Lafayette, Oregon
  Lafayette is a city in Yamhill County, Oregon, United States on the Yamhill River and Oregon Route 99W. It was founded in 1846 and incorporated in 1878...
  
  , Oregon
  Oregon
  Oregon is a state in the Pacific Northwest region of the United States. It is located on the Pacific coast, with Washington to the north, California to the south, Nevada on the southeast and Idaho to the east. The Columbia and Snake rivers delineate much of Oregon's northern and eastern...
  
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External links

• http://www.ces.ncsu.edu/depts/hort/consumer/factsheets/trees-new/cultivars/ulmus_parvifolia.htm Ulmus parvifolia cultivar list.