The
field elm
''Ulmus minor'' Mill., the field elm, is by far the most polymorphic of the European species, although its taxonomy remains a matter of contention. Its natural range is predominantly south European, extending to Asia Minor and Iran; its northern ...
cultivar
A cultivar is a type of cultivated plant that people have selected for desired traits and when propagated retain those traits. Methods used to propagate cultivars include: division, root and stem cuttings, offsets, grafting, tissue culture ...
''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.
Description
A moderately tall growing shrub, reaching about 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. The colouring and variegation are most striking in spring, fading somewhat in summer.
[''Hilliers' Manual of Trees & Shrubs''. (1977). David & Charles, Newton Abbot, UK.]
Pests and diseases
'Silvery Gem' is not known to be resistant to
Dutch elm disease
Dutch elm disease (DED) is caused by a member of the sac fungi (Ascomycota) affecting elm trees, and is spread by elm bark beetles. Although believed to be originally native to Asia, the disease was accidentally introduced into Americas, America ...
, but the low height of the tree may ensure that it avoids
colonization by
Scolytus
''Scolytus'' is a genus of bark beetle
A bark beetle is the common name for the subfamily of beetles Scolytinae. Previously, this was considered a distinct family (Scolytidae), but is now understood to be a specialized clade of the "true wee ...
bark beetles and thus remain free of infection. It has been noted that shrub-elms are usually less prone to infection.
Rafaël Govaerts, Kris Michielsen and Eike Jablonski, 'Untraced weeping broadleaf cultivars: an overview', dendrology.lu
/ref>
Cultivation
The clone won a Golden Medal in The Netherlands in the mid-1960s.
Synonymy
*''Ulmus procera'' 'Silvery Gem'.
Nurseries
Europe
*Arboretum Waaslan
Nieuwkerken-Waas
Nieuwkerken-Waas is a village in the Belgian province East Flanders. Since 1977, it has been a subdivision ( deelgemeente) of the municipality of Sint-Niklaas.
History
In comparison with towns bordering Sint-Niklaas such as Waasmunster, Belsel ...
, Belgium.
*Clonmel Garden Centre, Clonmel, Tipperary
Tipperary is the name of:
Places
*County Tipperary, a county in Ireland
**North Tipperary, a former administrative county based in Nenagh
**South Tipperary, a former administrative county based in Clonmel
*Tipperary (town), County Tipperary's na ...
, Éire.
*PlantenTuin Esveld, Boskoop, Netherlands
*Wisley Plant Centre (Royal Horticultural Society
The Royal Horticultural Society (RHS), founded in 1804 as the Horticultural Society of London, is the UK's leading gardening charity.
The RHS promotes horticulture through its five gardens at Wisley (Surrey), Hyde Hall (Essex), Harlow Carr (Nor ...
), Woking, UK
References
External links
* http://www.rhs.org.uk/RHSPlantFinder/Plantfinder2.asp?crit=ulmus&page=2&genus=Ulmus. RHS Plant Finder, UK.
{{Elm species, varieties, hybrids, hybrid cultivars and species cultivars , state=collapsed
Field elm cultivar
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Ulmus