''Ulmus'' 'Wanoux' (selling name ) is a Dutch hybrid

cultivar A cultivar is a kind of Horticulture, cultivated plant that people have selected for desired phenotypic trait, traits and which retains those traits when Plant propagation, propagated. Methods used to propagate cultivars include division, root a ...

raised at the Dorschkamp Research Institute for Forestry & Landscape Planning,

Wageningen Wageningen () is a Municipalities of the Netherlands, municipality and a historic city in the central Netherlands, in the province of Gelderland. It is famous for Wageningen University, which specialises in life sciences. The municipality had a ...

, from an open pollination of 'Plantyn'. Originally identified as clone No. 762, it was selected for assessment by the French

Institut National de la Recherche Agronomique The Institut national de la recherche agronomique (; ; abbr. INRA ) was a French public research institute dedicated to agricultural science. It was founded in 1946 and is a Public Scientific and Technical Research Establishment under the join ...

(INRA), which patented it as 'Wanoux' () in 2006. was introduced to the UK by the Hampshire & Isle of Wight Branch, ''

Butterfly Conservation Butterfly Conservation (BC) is a UK-wide nonprofit environmentalist organization and charity dedicated to conserving butterflies, moths, and the environment. The charity uses its research to provide advice on how to conserve and restore butterf ...

'', in 2008, as part of its assessment of DED-resistant cultivars as potential hosts of the endangered

White-letter Hairstreak The white-letter hairstreak (''Satyrium w-album'') is a butterfly in the family Lycaenidae. Appearance and behaviour A dark little butterfly that spends the majority of its life in the tree tops, feeding on honeydew, making it best observed thr ...

. Butterfly Conservation (2023). ''Disease-resistant elm cultivars'

Butterfly Conservation, Lulworth, England.Brookes, A. H. (2024). ''Great Fontley Elm Trial, 2024 Report'' Butterfly Conservation, Lulworth, UK. Unlicenced propagation of is prohibited in Europe inc. the UK under Certificat d'Obtention Végétale (COV) EU 24403 until its expiry on 31 December 2039.

Description

is a narrow tree primarily intended for street planting. The glossy, dark-green leaves, < 11 cm long by 8 cm wide, are coarsely toothed and have conspicuous venation. The samarae are sub-orbicular, almost cordate, typically 15 mm long by 13 mm wide, the seed slightly nearer the shallow notch. Towards the end of the season, the leaves suffer from various afflictions and can appear shabby. Leafing is late, but not quite as late as its stablemate Ulmus 'Nanguen' = Lutece, . Many minor buds fail to burst, so that young plants are rather sparsely furnished; in combination with the tree's limited lateral development, this can lead to a skeletal appearance.Herling, D. ''Resistant Elms''
/ref> The tree has not been observed to sucker from its roots. file:Ulmus VADA leaves.JPG, VADA leaves file:Ulmus VADA samarae 2.jpg, VADA samarae

Pests and diseases

Tests in

France France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlan ...

by INRA found the tree to be 'highly resistant' to Dutch elm disease, exhibiting the lowest wilting percentage of all the clones trialled, making it comparable with 'Sapporo Autumn Gold'Pinon, J., Lohou, C. & Cadic, A. (1998). Hybrid Elms (Ulmus Spp.): Adaptability in Paris and behaviour towards Dutch elm disease (Ophiostoma novo-ulmi). ''Acta Horticulturae'' 496, 107–114, 1998. However, the presence of ''U. wallichiana'' in the ancestry of poses the risk of susceptibility to elm yellows (phloem necrosis), which seriously damaged its Dutch stablemate 'Lobel' used as a control in the Italian elm breeding programme.Mittempergher, L., (2000). Elm Yellows in Europe. In: ''The Elms, Conservation and Disease Management.'' 103–119. Dunn C.P., ed. Kluwer Academic Press Publishers, Boston, USA. The clone has also proven susceptible to Coral spot fungus '' Nectria cinnabarina'' in the Netherlands.Nijboer, R. (2016). ''Return of the Elm''. 2016 International Elm Conference, Lees Court, Kent, England. In trials in southern England, the leaves were found to remain completely free of Black Spot.

Cultivation

has moderate vigour, attaining a height of 14 m at 20 years of age in France. The tree is reputedly easily propagated from cuttings. was introduced to North America in 2010, with the supply of two small specimens to the

USDA The United States Department of Agriculture (USDA) is an United States federal executive departments, executive department of the Federal government of the United States, United States federal government that aims to meet the needs of commerc ...

Washington, D.C. Washington, D.C., formally the District of Columbia and commonly known as Washington or D.C., is the capital city and federal district of the United States. The city is on the Potomac River, across from Virginia, and shares land borders with ...

, released from quarantine in 2013. is reported "the most successful so far" (2021) of a 2014 trial planting of elms at

Lees Court Sheldwich is a village and civil parish in the far south of the Borough of Borough of Swale, Swale in Kent, England. Geography Sheldwich is a rural parish situated south of the market town of Faversham, north of Ashford, Kent, Ashford and 12 m ...

Kent Kent is a Ceremonial counties of England, ceremonial county in South East England. It is bordered by Essex across the Thames Estuary to the north, the Strait of Dover to the south-east, East Sussex to the south-west, Surrey to the west, and Gr ...

.Tim Richardson, 'Can we resurrect the English elm?', ''The Daily Telegraph'', 6 March 2021 Among urban introductions in the UK are three specimens, planted in 2014, towards the east end of Broad Walk,

Christ Church Meadow, Oxford Christ Church Meadow is a flood-meadow and popular walking and picnic spot in Oxford, England. Roughly triangular in shape, it is bounded by the River Thames (the stretch through Oxford being known as "The Isis"), the River Cherwell, and Chri ...

, and four in Inverleith Park, Edinburgh, planted c.2012. 300 VADA were planted circa 2019 in the Parc de Sceaux, southern Paris, and early in 2021 92 were planted in the jardin des Tuileries. is not known to have been introduced to Australasia. File:IJburg view 02.jpg, 'Wanoux' lines,

IJburg IJburg () is a residential neighbourhood under construction in Amsterdam, Netherlands. It is situated in the IJmeer and is being built on artificial islands which have been raised from the lake. The Haveneiland, Rieteilanden, Steigereiland and C ...

, Amsterdam, 2014 File:La prairie sous les ormes (Parc de Sceaux, France) (46978012675).jpg, 'Wanoux' avenue in the Parc de Sceaux, 2019 File:Jardin des Tuileries in July 2022 5.jpg, 'Wanoux' in the Tuileries, 2022 File:Jardin des Tuileries in July 2022 4.jpg, 'Wanoux' avenue in the Tuileries, 2022

Notable trees

Former French prime minister

Lionel Jospin Lionel Robert Jospin (; born 12 July 1937) is a French politician who served as Prime Minister of France from 1997 to 2002. Jospin was First Secretary of the French Socialist Party, First Secretary of the Socialist Party from 1995 to 1997 and th ...

insisted on planting an elm, the tree of the

Left Left may refer to: Music * ''Left'' (Hope of the States album), 2006 * ''Left'' (Monkey House album), 2016 * ''Left'' (Helmet album), 2023 * "Left", a song by Nickelback from the album ''Curb'', 1996 Direction * Left (direction), the relativ ...

when, in keeping with tradition, he was obliged to plant a tree in the garden of the

Hôtel Matignon The Hôtel Matignon (, ) is the official residence of the Prime Minister of France. It is located in the 7th arrondissement of Paris, at 57 Rue de Varenne. The name Matignon is often used as a metonym for the governmental action of the French p ...

, his official residence in

Paris Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, largest city of France. With an estimated population of 2,048,472 residents in January 2025 in an area of more than , Paris is the List of ci ...

, in 1998. He chose , then still known only by its Dutch trial identity of '762'. The Left, however, does not have a monopoly on elms. 'The Queen's Elm' planted on the main lawn of

Holyrood Palace The Palace of Holyroodhouse ( or ), commonly known as Holyrood Palace, is the official residence of the British monarch in Scotland. Located at the bottom of the Royal Mile in Edinburgh, at the opposite end to Edinburgh Castle, Holyrood has s ...

Edinburgh Edinburgh is the capital city of Scotland and one of its 32 Council areas of Scotland, council areas. The city is located in southeast Scotland and is bounded to the north by the Firth of Forth and to the south by the Pentland Hills. Edinburgh ...

, near the ruined

Holyrood Abbey Holyrood Abbey is a ruined abbey of the Canons Regular in Edinburgh, Scotland. The abbey was founded in 1128 by David I of Scotland. During the 15th century, the abbey guesthouse was developed into a List of British royal residences, royal r ...

to mark the

Diamond Jubilee of Elizabeth II The year 2012 marked the Diamond Jubilee of Elizabeth II being the 60th anniversary of the accession of Queen Elizabeth II on 6 February 1952. The only diamond jubilee celebration for any of Elizabeth's predecessors was in 1897, for Queen Victo ...

(2012), is also an ''Ulmus'' .'Survey of the elms of Holyrood Palace', Dr Max Coleman, Royal Botanic Garden Edinburgh, 22/07/2016 (updated 11/08/16) File:Hôtel de Matignon, orme de Lionel Jospin.JPG, Orme de Lionel Jospin, Hôtel Matignon (2015) File:Ulmus 'Wanoux' planted by HM for her Diamond Jubilee. Holyrood Palace, Edinburgh.jpg, 'The Queen's Elm', Holyrood Palace (2016)

Etymology

The registered cultivar name 'Wanoux' is a contraction of Wageningen and Champenoux, the locations of the Dutch and French research stations. The selling name VADA was the

ancient Roman In modern historiography, ancient Rome is the Roman people, Roman civilisation from the founding of Rome, founding of the Italian city of Rome in the 8th century BC to the Fall of the Western Roman Empire, collapse of the Western Roman Em ...

name of Wageningen.

Accessions

Europe

Grange Farm Arboretum The Grange Farm Arboretum is a small private arboretum comprising 3 hectares accommodating over 800 trees, mostly native and ornamental species or cultivars, notably oaks, ashes, walnuts and elms, growing on a calcareous loam.Ostler, J. (2009) ...

Lincolnshire Lincolnshire (), abbreviated ''Lincs'', is a Ceremonial counties of England, ceremonial county in the East Midlands and Yorkshire and the Humber regions of England. It is bordered by the East Riding of Yorkshire across the Humber estuary to th ...

, UK. Acc. no. 693. *Great Fontley Farm,

Fareham Fareham ( ) is a market town at the north-west tip of Portsmouth Harbour, between the cities of Portsmouth and Southampton in south east Hampshire, England. It gives its name to the Borough of Fareham. It was historically an important manufac ...

, UK. ''

'' Elm Trials plantation, Home Field: one small sapling planted 2008. *

Longstock Park Longstock Park is in the civil parish of Longstock in the Test Valley district of Hampshire, England, and forms part of the Leckford Estate (1520 ha.), wholly owned by the John Lewis Partnership. Description Formerly Longstock Manor, of ...

Arboretum,

Longstock Longstock is a village and civil parish in Hampshire, England. It lies on the western bank of the River Test, to the north of Stockbridge, Hampshire, Stockbridge and to the west of Leckford. The parish has a population of around 450. The parish ...

Stockbridge, Hampshire Stockbridge is a town and civil parish in the Test Valley district of Hampshire, England. It had a population of 592 at the 2011 census. It sits astride the River Test and at the foot of Stockbridge Down. Description The town is situated on th ...

, UK. One small sapling planted 2010. *

Royal Botanic Garden Edinburgh The Royal Botanic Garden Edinburgh (RBGE) is a scientific centre for the study of plants, their diversity and conservation, as well as a popular tourist attraction. Founded in 1670 as a physic garden to grow medicinal plants, today it occupies ...

, UK. Acc. no. 20090115. * Sir Harold Hillier Gardens,

Romsey Romsey ( ) is a town in the Test Valley district of Hampshire, England. The town is situated northwest of Southampton, southwest of Winchester and southeast of Salisbury. It sits on the outskirts of the New Forest, just over northeast of ...

, UK. Acc. no. 2008.0639. *

Wijdemeren Wijdemeren () is a municipality in the Netherlands, in the province of North Holland, on the western border of the Gooi region. Wijdemeren contains many lakes, including ''Spiegelplas'' and ''Ankeveense Plassen'' in the north(east) and ''Loosdrech ...

City Council, Netherlands. Elm collection, used for elm lane 's-Gravelansevaartweg, Loosdrecht

North America

United States National Arboretum The United States National Arboretum is an arboretum in northeast Washington, D.C., operated by the United States Department of Agriculture's Agricultural Research Service. It was established in 1927 by an act of Congress after a campaign by USDA ...

, US. 2 small trees.

Nurseries

*F P Matthews 'Trees for Life',

Tenbury Wells Tenbury Wells (locally Tenbury) is a small market town and Civil parishes in England, civil parish in the north-western extremity of the Malvern Hills District of Worcestershire, England. Situated 6 miles southeast of Ludlow, its northern border ...

Worcestershire Worcestershire ( , ; written abbreviation: Worcs) is a Ceremonial counties of England, ceremonial county in the West Midlands (region), West Midlands of England. It is bordered by Shropshire, Staffordshire, and the West Midlands (county), West ...

, UK. Bare-root whips. *Van Den Berk (UK) Ltd., London, UK. Standards.

References

{{DEFAULTSORT:Ulmus 'Wanoux' Vada Ulmus Ulmus articles with images Hybrid elm cultivar