The
Chinese Elm cultivar ''Ulmus parvifolia'' 'King's Choice' is one of the early American selections best known for its winter hardiness, able to withstand temperatures of -30 deg.
Celsius
The degree Celsius is the unit of temperature on the Celsius scale (originally known as the centigrade scale outside Sweden), one of two temperature scales used in the International System of Units (SI), the other being the Kelvin scale. The ...
. 'King's Choice' was patented in 1985.
Description
Bushy in shape, its leaves turn yellow in autumn, but the cultivar lacks the attractive mottled bark for which the species is renowned.
[''HortScience'', Vol. 26: 290-292 (1991).]
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''.
Cultivation
The tree featured in the elm trial
conducted by
Northern Arizona University
Northern Arizona University (NAU) is a public research university based in Flagstaff, Arizona. It was founded in 1899 as the final public university established in the Arizona Territory, 13 years before Arizona was admitted as the 48th state.
...
at
Holbrook, eastern
Arizona. 'King's Choice' is not known to be in cultivation in Europe or Australasia.
Etymology
The tree was named for Benjamin J. King, who made the original selection at King's Men Tree Farms,
Hampstead
Hampstead () is an area in London, which lies northwest of Charing Cross, and extends from Watling Street, the A5 road (Roman Watling Street) to Hampstead Heath, a large, hilly expanse of parkland. The area forms the northwest part of the Lon ...
,
Maryland.
Accessions
North America
*
Arnold Arboretum
The Arnold Arboretum of Harvard University is a botanical research institution and free public park, located in the Jamaica Plain and Roslindale neighborhoods of Boston, Massachusetts. Established in 1872, it is the oldest public arboretum in N ...
, US. Acc. no. 287-95
*
Holden Arboretum, US. Acc. no. 92-94
References
Chinese elm cultivar
Ulmus articles with images
Ulmus
{{Ulmaceae-stub