Ulmus parvifolia 'Seiju'

*Ulmus parvifolia* 'Seiju'
Ulmus parvifolia 'Seiju'
	Seiju Elm bonsai
Species	Ulmus parvifolia
Cultivar	'Seiju'
Origin	US

The Chinese elm cultivar Ulmus parvifolia 'Seiju' is a dwarf variety, a sport of 'Hokkaido'.^[1]

Description

'Seiju' is described as smaller than Catlin and faster growing than Hokkaido, distinguished from the latter by its larger leaves.^[2]

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.^[3]

Cultivation

The tree is commercially available in the United States and Australia where it is popular as a bonsai subject.^[4] The tree was also listed in the UK until 2002.

Accessions

North America

Bartlett Tree Experts, US. Acc. no. 2004–519
Missouri Botanical Garden, St. Louis, Missouri, US. Acc. nos. 1999–1924, 1999–1925, 2003–2731.
Smith College, US. Acc. no. 29788

Europe

Grange Farm Arboretum , Sutton St. James, Spalding, Lincs., UK. Acc. no. 836.

Nurseries

North America

(Widely available)

Australasia

Yamina Rare Plants , Monbulk, Melbourne, Australia.

References

↑ Santamour, Frank S.; Bentz, Susan E. (May 1995). "Updated Checklist of Elm (Ulmus) Cultivars for use in North America". Journal of Arboriculture. 21 (3): 122–131. Retrieved 20 June 2016.
↑ "Photograph of 'Seiju' branch and leaves". Archived from the original on 2016-03-04. Retrieved 2010-11-10.
↑ "Elm Leaf Beetle Survey". Archived from the original on 2011-07-19. Retrieved 17 July 2017.
↑ Young, H. C. & Young, S. (1980), Intern. Bonsai, 2(3): 28, 1980

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[Santamour-1] Santamour, Frank S.; Bentz, Susan E. (May 1995). "Updated Checklist of Elm (Ulmus) Cultivars for use in North America". Journal of Arboriculture. 21 (3): 122–131. Retrieved 20 June 2016.

[2] "Photograph of 'Seiju' branch and leaves". Archived from the original on 2016-03-04. Retrieved 2010-11-10.

[3] "Elm Leaf Beetle Survey". Archived from the original on 2011-07-19. Retrieved 17 July 2017.

[Young-4] Young, H. C. & Young, S. (1980), Intern. Bonsai, 2(3): 28, 1980

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Ulmus parvifolia 'Seiju'
Seiju Elm bonsai
Species	Ulmus parvifolia
Cultivar	'Seiju'
Origin	US