The Chinese Elm cultivar Ulmus parvifolia 'Seiju' is a dwarf variety, a sport of 'Hokkaido'.[1]
| Ulmus parvifolia 'Seiju' | |
|---|---|
 Seiju Elm bonsai | |
| Species | Ulmus parvifolia |
| Cultivar | 'Seiju' |
| Origin | US |
Description
edit
'Seiju' is described as smaller than Catlin and faster growing than Hokkaido, distinguished from the latter by its larger leaves.[2]
Pests and diseases
editThe 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
editThe 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
editNorth America
edit- 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
edit- Grange Farm Arboretum [1], Sutton St. James, Spalding, Lincs., UK. Acc. no. 836.
Nurseries
editNorth America
edit(Widely available)
Australasia
editReferences
edit- ^ 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
- ^ "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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