Ulmus davidiana var. japonica 'JFS-Bieberich' = Emerald Sunshine

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Ulmus davidiana var. japonica 'JFS-Bieberich' = Emerald Sunshine
Variety Ulmus davidiana var. japonica
Cultivar 'JFS-Bieberich' = Emerald Sunshine
OriginSunshine Nursery, Oklahoma, US

The Japanese Elm cultivar Ulmus davidianavar.japonica 'JFS-Bieberich' (sold as Emerald Sunshine) was raised by the Sunshine Nursery, Oklahoma, from seed collected in China by proprietor Steve Bieberich. [1] Emerald Sunshine proved only moderately successful in the US National Elm Trial, averaging a survival rate of 70% overall. [2]

Contents

Description

Emerald Sunshine attains a height of 9 m and develops a neat vase shape, the crown < 7.5 m in width borne by a stout stem. The cultivar has thick, deep-green leaves turning dull yellow in the fall. Trees planted as part of the National Elm Trial at the Bowley Plant Science Teaching Center, U C Davis, in northern California grew comparatively slowly, increasing in height by 1 m and d.b.h. by 1.6 cm per annum. [3] The tree was summarized by Michael Dirr, Professor of Horticulture at the University of Georgia as 'impressive' .

Pests and diseases

Emerald Sunshine is resistant to Dutch elm disease and Elm Yellows (Phloem necrosis). Foliage of trees under assessment at the aforementioned National elm trial site at U C Davis suffered minimal damage caused by the elm leaf beetle Xanthogaleruca luteola , [3] whilst damage caused by Japanese Beetle in trials at the University of Kentucky was found to be slight, owing to the dense pubescence on the underside of the leaves. [4] [5]

Cultivation

Emerald Sunshine is tolerant of high pH levels and soil compaction; it is also very resistant to desiccating winds. [1] The species does not sucker from roots. [6]

The cultivar is represented in Europe by five young grafted trees at the Noordplant nursery, Glimmen, The Netherlands; it is not known to have been introduced to Australasia.

Accessions

North America

Nurseries

North America

Synonymy

Etymology

Named 'JFS' for the J. Frank Schmidt nursery, Oregon, and 'Bieberich' for the proprietor of the Sunshine Nursery in Oklahoma.

Related Research Articles

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<i>Ulmus</i> Homestead Elm cultivar

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<i>Ulmus</i> × <i>hollandica</i> Pioneer Elm cultivar

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<i>Ulmus</i> Regal Elm cultivar

Ulmus 'Regal' is an American hybrid elm cultivar developed by the University of Wisconsin–Madison and released in 1983. 'Regal' was derived from seeds arising from the crossing of the Dutch hybrid clones 'Commelin' and '215' sent in 1960 by Hans M. Heybroek of the Dorschkamp Research Institute for Forestry & Landscape Planning, Wageningen, Netherlands.

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<i>Ulmus</i> Morton Glossy = <span class="trade_designation" style="font-variant:small-caps; margin-left: 0.05em;">Triumph</span> Elm cultivar

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Ulmus 'Morton Plainsman' is a hybrid cultivar raised by the Morton Arboretum from a crossing of Siberian Elm and a Japanese Elm grown from openly pollinated seed donated by the Agriculture Canada Research Station at Morden, Manitoba. Tested in the US National Elm Trial coordinated by Colorado State University, Vanguard averaged a survival rate of 78% after 10 years.

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<i>Ulmus</i> Morton Stalwart = <span class="trade_designation" style="font-variant:small-caps; margin-left: 0.05em;">Commendation</span> Elm cultivar

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<i>Ulmus americana</i> Valley Forge Elm cultivar

The American Elm cultivar Ulmus americana 'Valley Forge' was raised by the Agricultural Research Service in Maryland. The tree was released to wholesale nurseries without patent restrictions by the U. S. National Arboretum in 1995 after proving to have a high resistance to Dutch elm disease. 'Valley Forge' proved only moderately successful in the US National Elm Trial, averaging a survival rate of 66.7% overall, owing largely to environmental factors rather than susceptibility to disease.

<i>Ulmus americana</i> New Harmony Elm cultivar

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<i>Ulmus parvifolia</i> Emer II = <span class="trade_designation" style="font-variant:small-caps; margin-left: 0.05em;">Allee</span> Elm cultivar

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The Chinese Elm cultivar Ulmus parvifolia 'Emer I' or 'Emerald Isle' was cloned from a tree planted circa 1920 on the University of Georgia campus at Athens.

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<i>Ulmus davidiana</i> var. <i>japonica</i> Prospector Elm cultivar

The Japanese elm cultivar Ulmus davidianavar.japonica 'Prospector' was originally treated as a cultivar of Wilson's elm U. wilsonianaSchneid., a species sunk as Ulmus davidiana var. japonica by Fu. A U.S. National Arboretum introduction, it was selected in 1975 from a batch of 1965 seedlings in Delaware, Ohio, and released without patent restrictions in 1990. 'Prospector' proved moderately successful in the US National Elm Trial, averaging a survival rate of 76% overall.

<i>Ulmus</i> Patriot Elm cultivar

Ulmus 'Patriot' is a hybrid cultivar raised by the United States National Arboretum in 1980. Derived from a crossing of the American hybrid 'Urban' with the Wilson's Elm cultivar 'Prospector', 'Patriot' was released to commerce, free of patent restrictions, in 1993. Tested in the US National Elm Trial coordinated by Colorado State University, 'Patriot' averaged a survival rate of 85% after 10 years.

The Chinese Elm cultivar Ulmus parvifolia 'Red Fall' is an American clone selected by S. Bieberich of the Sunshine Nursery, Clinton, Oklahoma.

The National Elm Trial was an American volunteer effort to evaluate a range of newly developed elm cultivars as replacements for elms destroyed by Dutch elm disease (DED). The Colorado State University College of Agricultural Sciences coordinated the trial.

References

  1. 1 2 Davis, T. (2007). Ulmus Emerald Sunshine. Nursery Management & Production, August 2007
  2. Griffin, J.; et al. (2017). "Ten-Year Performance of the United States National Elm Trial" (PDF). Arboriculture & Urban Forestry. International Society of Arboriculture, Atlanta, US. 43(3):107–120.
  3. 1 2 McPherson, G. et al. (2008). National elm trial: Initial report from Northern California. Western Arborist, Fall 2009, 3236.
  4. Brady, C., Condra, J., & Potter, D. (2008) Resistance of Landscape-suitable Elm (Ulmus spp.) Cultivars to Japanese Beetle, Leaf Miners, and Gall Makers. 2008 Research Report, Nursery & Landscape Program, 1516. University of Kentucky.
  5. Dirr, M. (2009). 'Future Tree Selections'. Western, Spring 2009,  p.8. Western Nursery & Landscape Association, St Joseph, Missouri.
  6. Heybroek, Hans M. (1981). "The Japanese elm species and their value for the Dutch elm breeding program" (PDF). Proceedings of the Dutch Elm Disease symposium and workshop, October 5–9, Winnipeg, Manitoba: 78–90.