Ulmus davidiana var. japonica 'Jeffree'

The Japanese Elm cultivar Ulmus davidiana var. japonica 'Jeffree' (: ) is another cold-resistant selection from Canada, raised along with 'Discovery' in the 1980s by Dr Wilbert Ronald, of Jeffries Nurseries Ltd., and Rick Durand of Shade Consulting Services, Portage la Prairie, Manitoba http://fletcher.ces.state.nc.us/programs/nursery/metria/metria11/warren/elm.htm .

Description

Little descriptive information is available, beyond its comparison with the 'Discovery' clone in the latter's patent application, in which it is noted that has an open crown with codominant lateral branching, and leaves tinged reddish-purple in autumn. The species does not sucker from roots.

Pests and diseases

The tree has a similar resistance to Dutch elm disease and elm leaf beetle Xanthogaleruca luteola as 'Discovery'.

Cultivation

is not known to be in cultivation beyond Canada.

Accessions

None known.

Nurseries

North America

• Patmore Nursery http://patmorenursery.com , Brandon, Manitoba, Canada.
• Sun Valley Garden Centre http://www.qscaping.com/NetPS-Engine.asp?CCID=20000011&page=results&Keyword=ulmus&Category=&Type=&Spread=Any&SpreadDim=feet&Growth=&Hardiness=7&Height=Any&HeightDim=feet&Canopy=&Application=&Texture=&Wildlife=&Form=&Density=&FlowerColor=&FlowerColorJS=&FoliageColor=&FoliageColorJS=&FallColor=&FallColorJS=&FruitPeriod=&BarkColor=&BarkColorJS=&FlowerPeriod=&Variegation=&VariegationJS=&FruitColor=&FruitColorJS=&Edible=&BarkTexture=&SunShade=&Moisture=&Pollution=&SoilType=&pH=&Submit=Search , Eden Prairie, Minnesota, US.

References