Ulmus minor 'Silvery Gem'
Ulmus minor 'Silvery Gem' | |
---|---|
Species | Ulmus minor |
Cultivar | 'Silvery Gem' |
Origin | Europe |
The field elm cultivar Ulmus minor 'Silvery Gem' is an ornamental clone raised, as Ulmus carpinifolia 'Silvery Gem', before 1965 by P. G. Zwijnenburg of Zwijnenburg nurseries, Boskoop, The Netherlands.[1]
Description
A moderately tall growing shrub, reaching about 3–4 m (9.8–13.1 ft) in 10 years and with rather dense, twiggy branches bearing ovate leaves of a grey-green or silvery colour, especially in the spring, with irregular but conspicuous creamy-white margins.[2] The colouring and variegation are most striking in spring, fading somewhat in summer.[1][3][4]
Pests and diseases
'Silvery Gem' is not known to be resistant to Dutch elm disease,[citation needed] but the low height of the tree may ensure that it avoids colonization by Scolytus bark beetles and thus remain free of infection. It has been noted that shrub-elms are usually less prone to infection.[5]
Cultivation
The clone won a Golden Medal in The Netherlands in the mid-1960s.[1] It remains available from several nurseries in Europe (see below).
Synonymy
- Ulmus procera 'Silvery Gem'.[3]
Nurseries
Europe
- Arboretum Waasland [1], Nieuwkerken-Waas, Belgium.
- Clonmel Garden Centre, Clonmel, County Tipperary, Ireland.
- PlantenTuin Esveld, Boskoop, Netherlands. [2].
- Wisley Plant Centre (Royal Horticultural Society), Woking, UK. [3]
References
- ^ a b c Grogtendorst, Herman J. (1971). "Tentoonstelling Flora Nova '70". Dendroflora. 8: 73. Retrieved 24 January 2018.
- ^ "Herbarium specimen - WAG.1878119". Botany catalogues. Naturalis Biodiversity Center. Herbarium specimen labelled U. carpinifolia 'Silvery Gem' (Boskoop, 1966)
- ^ a b Hilliers' Manual of Trees & Shrubs. (1977). David & Charles, Newton Abbot, UK.
- ^ Photograph and description of Ulmus minor 'Silvery Gem': Ronald Houtman, Variegated trees and shrubs: the illustrated encyclopedia (Portland, Oregon: Timber Press, in association with the Royal Boskoop Horticultural Society), p.285
- ^ Rafaël Govaerts, Kris Michielsen and Eike Jablonski, 'Untraced weeping broadleaf cultivars: an overview', dendrology.lu
External links
- http://www.rhs.org.uk/RHSPlantFinder/Plantfinder2.asp?crit=ulmus&page=2&genus=Ulmus. RHS Plant Finder, UK.
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- U. americana (American elm)
- U. americana var. floridana (Florida elm)
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- U. minor subsp. minor
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- U. pseudopropinqua (Harbin spring elm)
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- U. szechuanica (Szechuan (Sichuan) or red-fruited elm)
- U. thomasii (Rock or cork elm)
- U. uyematsui (Alishan elm)
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- U. wallichiana (Himalayan or kashmir elm)
- U. wallichiana subsp. wallichiana
- U. wallichiana subsp. xanthoderma
- U. wallichiana var. tomentosa
- U. boissieri
- U. minor subsp. canescens (Grey, grey-leafed or hoary elm)
- U. elliptica
- U. davidiana var. japonica × U. minor
- U. × arbuscula
- U. × arkansana
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- U. × diversifolia
- U. × hollandica (Dutch elm)
- U. × hollandica var. insularum
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