Discovery (elm cultivar)
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The Japanese Elm Ulmus davidiana var. japonica cultivar Discovery is a cold-resistant selection from Canada. It was raised along with Freedom in the 1980s by Dr Wilbert Ronald, of Jeffries Nurseries Ltd. and Rick Durrand of Shade Consulting Services, Portage la Prairie, Manitoba. It has an oval form, with vase-shaped branching, supporting dark green foliage turning yellow in autumn. The tree grows to over 15 m in height, with a spread of much the same dimension. It is resistant to Dutch elm disease and elm leaf beetle. However, it performed very poorly in government trials [1] in Alberta, Canada, failing completely at five out of six sites. Moreover, the two trees that survived developed a very poor branching pattern requiring pruning to strengthen crotches.
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[edit] Arboreta etc. accessions
[edit] North America
- Brenton Arboretum, Dallas Center, Iowa. No details available.
- Smith College, acc. no. 4703.
[edit] Europe
None known.
[edit] Nurseries
[edit] North America
- Bailey Nurseries [2], St. Paul, Minnesota.
- Jeffries Nurseries, Portage la Prairie, Manitoba [3].
- Minnesota Valley Nurseries, Shakopee, Minnesota [4]
[edit] Synonymy
None.
[edit] External links
- http://fletcher.ces.state.nc.us/programs/nursery/metria/metria11/warren/elm.htm Return of the Elm -the status of elms in the nursery industry in 2000. Warren, K., J. Frank Schmidt and Co.
