Ulmus parvifolia 'Frosty'
| Ulmus parvifolia 'Frosty' | |
|---|---|
 'Frosty' leaves. | |
| Species | Ulmus parvifolia |
| Cultivar | 'Frosty' |
| Origin | Japan |
The Chinese Elm cultivar Ulmus parvifolia 'Frosty', or 'Frosty' lacebark elm, was intended primarily as a dwarf variegated variety. Roger Spencer (1995) stated that it was raised in Japan.[1]
Description
[edit]The tree is distinguished by its small leaves, which rarely exceed 18 mm in length and feature at first irregular white-flecked margins, "finally white only on the teeth".[2] The foliage emerges creamy-yellow in spring,[3] some leaves remaining pale later into the year.[4] The canopy turns rich yellow in the fall.[5] Descriptions of the cultivar's vigour and ultimate height vary from "a slow-growing shrub attaining no more than 8 ft (2.5 m)",[4] to "growing at a fast rate, to about 20 ft tall at maturity, with a spread of 15 ft".[5]
Pests and diseases
[edit]The species and its cultivars are highly resistant, but not immune, to Dutch elm disease, and unaffected by the Elm Leaf Beetle Xanthogaleruca luteola.[6]
Cultivation
[edit]'Frosty' is relatively common in cultivation on both sides of the Atlantic. In 2008 it was described as "uncommon" in Victoria, Australia.[7] Spencer reported it first listed in Australia around 1982 but present earlier (see Notable Trees).[1]
Putative specimen
[edit]A 55 ft U. parvifolia (2019), with little variegation, in the J.C. Raulston Arboretum, North Carolina, has been labelled 'Frosty'.[8]
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J.C. Raulston Arboretum U. parvifolia -
Foliage of same
Notable trees
[edit]Spencer (1995) reported a large specimen reverting to green, at the back entrance of Beechworth Mental Hospital, Beechworth, Victoria, Australia.[1]
Accessions
[edit]North America
[edit]- Dawes Arboretum [1], Newark, Ohio, US. 1 tree, no acc. details available.
- Denver Botanic Gardens, US. No details available
- Holden Arboretum, US. Acc. no. 85-176
- Smith College, US. Acc. no. 23703
Europe
[edit]- Clapton Court, Somerset, UK. TROBI Champion, 7 m high, d.b.h. 14 cm in 2006
- Royal Horticultural Society Gardens, Wisley, UK. No details available
- Sir Harold Hillier Gardens, UK. Acc. no. 1982.0008
Australia
[edit]- Glenormiston College, Glenormiston Road, Glenormiston South, Victoria 3265; 2 trees, 4 m in height (2008)[7][9]
Nurseries
[edit]North America
[edit]Widely available.
Europe
[edit]Widely available.
Australasia
[edit]References
[edit]- ^ a b c Spencer, Roger, ed., Horticultural Flora of South-Eastern Australia, Vol. 2 (Sydney, 1995), Ulmus, p.115
- ^ U. parvifolia, treesandshrubsonline.org
- ^ U. parvifolia 'Frosty', Silvan, Victoria; jftnurseries.com.au
- ^ a b U. parvifolia 'Frosty', landscapeplants.oregonstate.edu
- ^ a b 'Frosty' elm, U. parvifolia 'Frosty', plants.westonnurseries.com/12130019/Plant/8266
- ^ "Elm Leaf Beetle Survey". Archived from the original on 2011-07-19. Retrieved 17 July 2017.
- ^ a b U. parvifolia 'Frosty' in Glenormiston College, Victoria, trusttrees.org.au
- ^ jcra.ncsu.edu Variegated Chinese elm, U. parvifolia 'Frosty', J.C. Raulston Arboretum
- ^ U. parvifolia 'Frosty' in Glenormiston College, Victoria; vhd.heritagecouncil.vic.gov.au
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