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

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
3. "Elm Leaf Beetle Survey". Archived from the original on 2011-07-19. Retrieved 17 July 2017.
4. Young, H. C. & Young, S. (1980), Intern. Bonsai, 2(3): 28, 1980