Ulmus parvifolia 'Hokkaido'

Ulmus parvifolia 'Hokkaido'
'Hokkaido' in Wojsławice Arboretum
Species	Ulmus parvifolia
Cultivar	'Hokkaido'
Origin	US

The Chinese Elm cultivar Ulmus parvifolia 'Hokkaido' is an older cultivar of Japanese origin.

Description

A dwarf variety with small green leaves, and with corky bark in older specimens.^[1] 'Hokkaido' has been considered "too small for common size bonsai".^[2]

Cultivation

'Hokkaido' is relatively common in commercial cultivation on both sides of the Atlantic.^[3]

• 
  Bonsai 'Hokkaido' showing colour of December leaves

Synonymy

• 'Microphylla': Anon.
• Ulmus parvifolia 'Pygmaea', name in synonymy

Accessions

North America

• Denver Botanic Gardens, US. No details available.
• Holden Arboretum, US. Acc. no. L-98-506
• New York Botanical Garden, US. Acc. no. 1385/96

Europe

• Cambridge Botanic Garden [1], University of Cambridge, UK. No details available.
• National Botanic Gardens [2], Glasnevin, Dublin, Ireland. Location AY
• Royal Botanic Garden Edinburgh, UK. Acc. no. 19772625
• Royal Botanic Gardens Kew, UK. (as cv. 'Pygmaea'). Acc. nos. 1983–5054, 1984-3631
• Royal Horticultural Society Gardens, Wisley, UK. No details available.
• Sir Harold Hillier Gardens, Ampfield, Hampshire, UK. Acc. no. 2005.0996
• Hortus Botanicus Amsterdam, Amsterdam, Netherlands. Acc. no. 850208

Nurseries

North America

• ForestFarm [3], Williams, Oregon, US.
• North American Plants [4], Lafayette, Oregon, US.

Almost Eden [5], Merryville, Louisiana, US.

Europe

(Widely available)

References

1. Hilliers' Manual of Trees & Shrubs (2002), p.370. David & Charles, Newton Abbot, UK
2. Valavanis, W. N. (1982). Proc. Intern. Plant Prop. Soc. 32: 502–508, 1982.
3. 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.