Vanguard (elm hybrid)
Encyclopedia
The elm
cultivar
'Morton Plainsman' (Vanguard) is another Morton Arboretum
selection derived from a crossing of the Siberian Elm
U. pumila and the Japanese Elm
U. davidiana var. japonica grown from openly-pollinated seed donated by the Agriculture Canada Research Station at Morden
in Manitoba
.
. http://www.ca.uky.edu/agcollege/plantpathology/vaillanc/for410/Dutch%20Elm%20Disease/BASIC/DED/CORE/00/00/F1C.HTML#_Vanguard However, its performance in the southern United States has not impressed, and it was dismissed, along with its Morton stablemates 'Morton Stalwart' (Commendation) and 'Morton Glossy' (Triumph), as "ugly" by Michael Dirr
, Professor of Horticulture at the University of Georgia
http://www.greenbeam.com/rs/nm_pdfs/16338_013.pdf, on account of its "wild" growth and splaying branches.
, 'Morton Plainsman' (Vanguard) remains very susceptible to pests such as the elm-leaf beetle Xanthogaleruca luteola
http://www.sunshinenursery.com/survey.htm, Japanese beetle
, and cankerworms.
, 'Morton Plainsman' was found to have the second highest, after 'Morton Red Tip' (Danada Charm ), incidence of branch breakage occasioned by bark inclusions. However, the tree has a high degree of drought and cold tolerance making it particularly suitable for afforestation in the Great Plains
. In artificial freezing tests at the Morton Arboretum the LT50 (temp. at which 50% of tissues die) was found to be - 40 °C.
The tree is currently being evaluated in the National Elm Trial
http://treehealth.agsci.colostate.edu/research/nationalelmtrial/NET_Cultivars.htm coordinated by Colorado State University
. It is not known to have been introduced to Europe
or Australasia
.
Elm
Elms are deciduous and semi-deciduous trees comprising the genus Ulmus in the plant family Ulmaceae. The dozens of species are found in temperate and tropical-montane regions of North America and Eurasia, ranging southward into Indonesia. Elms are components of many kinds of natural forests...
cultivar
Cultivar
A cultivar'Cultivar has two meanings as explained under Formal definition. When used in reference to a taxon, the word does not apply to an individual plant but to all those plants sharing the unique characteristics that define the cultivar. is a plant or group of plants selected for desirable...
'Morton Plainsman' (Vanguard) is another Morton Arboretum
Morton Arboretum
The Morton Arboretum, in Lisle, Illinois, covers 1,700 acres and is made up of gardens of various plant types and collections of trees from specific taxonomical and geographical areas. It includes native woodlands and a restored Illinois prairie. The Arboretum has over 4,100 different species of...
selection derived from a crossing of the Siberian Elm
Siberian Elm
Ulmus pumila, the Siberian Elm, is native to Central Asia, eastern Siberia, Mongolia, Xizang , northern China, India and Korea . It is also known as the Asiatic Elm, Dwarf Elm and Chinese Elm. Two varieties are recognized: var pumila and var. arborea, the latter known as Turkestan elm...
U. pumila and the Japanese Elm
Japanese Elm
Ulmus davidiana var. japonica, the Japanese Elm, is one of the larger and more graceful Asiatic elms, endemic to much of continental north-east Asia and Japan.-Description:...
U. davidiana var. japonica grown from openly-pollinated seed donated by the Agriculture Canada Research Station at Morden
Morden, Manitoba
Morden is a small town with a population of 6571 located in the Pembina Valley region of southern Manitoba, Canada. Morden is less than ten minutes west of neighbouring Winkler, and a relatively short distance to Pembina Valley Provincial Park...
in Manitoba
Manitoba
Manitoba is a Canadian prairie province with an area of . The province has over 110,000 lakes and has a largely continental climate because of its flat topography. Agriculture, mostly concentrated in the fertile southern and western parts of the province, is vital to the province's economy; other...
.
Description
The tree has modest upright growth, increasing in height by an average of 0.8 m in an assessment at U C Davis, with leaves much the same size and colour of the American ElmAmerican Elm
Ulmus americana, generally known as the American Elm or, less commonly, as the White Elm or Water Elm, is a species native to eastern North America, occurring from Nova Scotia west to Alberta and Montana, and south to Florida and central Texas. The American elm is an extremely hardy tree that can...
. http://www.ca.uky.edu/agcollege/plantpathology/vaillanc/for410/Dutch%20Elm%20Disease/BASIC/DED/CORE/00/00/F1C.HTML#_Vanguard However, its performance in the southern United States has not impressed, and it was dismissed, along with its Morton stablemates 'Morton Stalwart' (Commendation) and 'Morton Glossy' (Triumph), as "ugly" by Michael Dirr
Michael Dirr
Michael A. Dirr, Ph.D is a horticulturist and a professor of horticulture at the University of Georgia. He is an expert on woody plants.-Education and Experience:...
, Professor of Horticulture at the University of Georgia
University of Georgia
The University of Georgia is a public research university located in Athens, Georgia, United States. Founded in 1785, it is the oldest and largest of the state's institutions of higher learning and is one of multiple schools to claim the title of the oldest public university in the United States...
http://www.greenbeam.com/rs/nm_pdfs/16338_013.pdf, on account of its "wild" growth and splaying branches.
Pests and diseases
Although resistant to Dutch elm diseaseDutch elm disease
Dutch elm disease is a disease caused by a member of the sac fungi category, affecting elm trees which is spread by the elm bark beetle. Although believed to be originally native to Asia, the disease has been accidentally introduced into America and Europe, where it has devastated native...
, 'Morton Plainsman' (Vanguard) remains very susceptible to pests such as the elm-leaf beetle Xanthogaleruca luteola
Xanthogaleruca luteola
Xanthogaleruca luteola, commonly known as the Elm Leaf Beetle, is a serious pest of the elm. Indigenous to Europe, it was accidentally introduced to North America. Both the imagines and larvae feed on the emergent leaves of the elm...
http://www.sunshinenursery.com/survey.htm, Japanese beetle
Japanese beetle
The beetle species Popillia japonica is commonly known as the Japanese beetle. It is about long and wide, with iridescent copper-colored elytra and green thorax and head...
, and cankerworms.
Cultivation
In trials at the University of MinnesotaUniversity of Minnesota
The University of Minnesota, Twin Cities is a public research university located in Minneapolis and St. Paul, Minnesota, United States. It is the oldest and largest part of the University of Minnesota system and has the fourth-largest main campus student body in the United States, with 52,557...
, 'Morton Plainsman' was found to have the second highest, after 'Morton Red Tip' (Danada Charm ), incidence of branch breakage occasioned by bark inclusions. However, the tree has a high degree of drought and cold tolerance making it particularly suitable for afforestation in the Great Plains
Great Plains
The Great Plains are a broad expanse of flat land, much of it covered in prairie, steppe and grassland, which lies west of the Mississippi River and east of the Rocky Mountains in the United States and Canada. This area covers parts of the U.S...
. In artificial freezing tests at the Morton Arboretum the LT50 (temp. at which 50% of tissues die) was found to be - 40 °C.
The tree is currently being evaluated in the National Elm Trial
National Elm Trial
The National Elm Trial is an American volunteer effort to evaluate a range of newly developed elm cultivars as replacements for elms destroyed by Dutch elm disease...
http://treehealth.agsci.colostate.edu/research/nationalelmtrial/NET_Cultivars.htm coordinated by Colorado State University
Colorado State University
Colorado State University is a public research university located in Fort Collins, Colorado. The university is the state's land grant university, and the flagship university of the Colorado State University System.The enrollment is approximately 29,932 students, including resident and...
. It is not known to have been introduced to Europe
Europe
Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...
or Australasia
Australasia
Australasia is a region of Oceania comprising Australia, New Zealand, the island of New Guinea, and neighbouring islands in the Pacific Ocean. The term was coined by Charles de Brosses in Histoire des navigations aux terres australes...
.
Hybrid cultivars
'Morton Plainsman' (Vanguard) was crossed with the hybrid cultivar 'Morton' (Accolade). A selection of the resultant seedlings was marketed under the name 'Charisma', later changed to 'Morton Glossy' (Triumph).Accessions
North America- Bartlett Tree Experts. Acc. nos. 2001-106, 2001-108
- Brenton ArboretumBrenton ArboretumThe Brenton Arboretum 121 acres is a new arboretum and botanical garden in early stages of development, located at 2629 Palo Circle, Dallas Center, Iowa, USA. The Arboretum aims to display all Iowa native trees and shrubs suitable to the site, as well as many other tree species which can grow in...
, Dallas Center, IowaIowaIowa is a state located in the Midwestern United States, an area often referred to as the "American Heartland". It derives its name from the Ioway people, one of the many American Indian tribes that occupied the state at the time of European exploration. Iowa was a part of the French colony of New...
. 5 trees, acquired 2009. Acc. no. not known. - Chicago Botanic GardenChicago Botanic GardenLocated at 1000 Lake Cook Road, Glencoe, Illinois, USA, the Chicago Botanic Garden is a living plant museum situated on nine islands featuring 24 display gardens and surrounded by four natural habitats: McDonald Woods, Dixon Prairie, Skokie River Corridor, and Lakes and Shores. The Garden is open...
, GlencoeGlencoe, IllinoisGlencoe is a village in Cook County, Illinois, United States. As of the 2010 census, the village population was 8,723. Glencoe is located on suburban Chicago's North Shore. Glencoe is located within the New Trier High School District. Glencoe is regarded as one of the most affluent suburbs on...
, IllinoisIllinoisIllinois is the fifth-most populous state of the United States of America, and is often noted for being a microcosm of the entire country. With Chicago in the northeast, small industrial cities and great agricultural productivity in central and northern Illinois, and natural resources like coal,...
. 2 trees, no other details available. - Dawes ArboretumDawes ArboretumThe Dawes Arboretum is a non-profit arboretum located outside of Columbus in Newark, Ohio. As one of the premier public gardens in North America, The Dawes Arboretum has over of plant collections, gardens and natural areas...
http://www.dawesarb.org/collectionsgardens/plant-search.asp, NewarkNewark, OhioIn addition, the remains of a road leading south from the Octagon have been documented and explored. It was first surveyed in the 19th century, when its walls were more apparent. Called the Great Hopewell Road, it may extend to the Hopewell complex at Chillicothe, Ohio...
, OhioOhioOhio is a Midwestern state in the United States. The 34th largest state by area in the U.S.,it is the 7th‑most populous with over 11.5 million residents, containing several major American cities and seven metropolitan areas with populations of 500,000 or more.The state's capital is Columbus...
. 3 trees, no acc. details available. - Holden ArboretumHolden ArboretumThe Holden Arboretum, in Kirtland, Ohio, USA, is one of the largest arboretums and botanical gardens in the United States, with over 3,500 acres , 600 acres of which are devoted to collections and gardens. Diverse natural areas and ecologically sensitive habitats make up the rest of the holdings...
. Acc. no. 00-127 - Morton ArboretumMorton ArboretumThe Morton Arboretum, in Lisle, Illinois, covers 1,700 acres and is made up of gardens of various plant types and collections of trees from specific taxonomical and geographical areas. It includes native woodlands and a restored Illinois prairie. The Arboretum has over 4,100 different species of...
. Acc. nos. 273-97, 4-2004, 156-2005. - Smith CollegeSmith CollegeSmith College is a private, independent women's liberal arts college located in Northampton, Massachusetts. It is the largest member of the Seven Sisters...
. Acc. no. 36505 - University of IdahoUniversity of IdahoThe University of Idaho is the State of Idaho's flagship and oldest public university, located in the rural city of Moscow in Latah County in the northern portion of the state...
Arboretum. Two trees. Acc. no. 2000093
Nurseries
North America- Acorn Farms http://www.acornfarms.com/acornfarmscontactus.htm, GalenaGalenaGalena is the natural mineral form of lead sulfide. It is the most important lead ore mineral.Galena is one of the most abundant and widely distributed sulfide minerals. It crystallizes in the cubic crystal system often showing octahedral forms...
, OhioOhioOhio is a Midwestern state in the United States. The 34th largest state by area in the U.S.,it is the 7th‑most populous with over 11.5 million residents, containing several major American cities and seven metropolitan areas with populations of 500,000 or more.The state's capital is Columbus...
. - Bailey Nurseries http://www.baileynurseries.com/, St. Paul, MinnesotaMinnesotaMinnesota is a U.S. state located in the Midwestern United States. The twelfth largest state of the U.S., it is the twenty-first most populous, with 5.3 million residents. Minnesota was carved out of the eastern half of the Minnesota Territory and admitted to the Union as the thirty-second state...
. - J. Frank Schmidt & Son http://www.google.co.uk/search?hl=en&q=J.+Frank+Schmidt+&btnG=Google+Search&meta=, BoringBoring, OregonBoring is an unincorporated community located in Clackamas County, Oregon, United States, on Oregon Route 212. It is approximately eight miles south of Gresham and about the same distance from Clackamas, both suburbs of Portland. The town is roughly twenty-two miles southeast from downtown...
, OregonOregonOregon is a state in the Pacific Northwest region of the United States. It is located on the Pacific coast, with Washington to the north, California to the south, Nevada on the southeast and Idaho to the east. The Columbia and Snake rivers delineate much of Oregon's northern and eastern...
. - Johnson's Nursery http://www.johnsonsnursery.com/, Menomonee Falls, WisconsinWisconsinWisconsin is a U.S. state located in the north-central United States and is part of the Midwest. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michigan to the northeast, and Lake Superior to the north. Wisconsin's capital is...
- Sun Valley Garden Centre http://www.qscaping.com/NetPS-Engine.asp?CCID=20000011&page=results&Keyword=ulmus&Category=&Type=&Spread=Any&SpreadDim=feet&Growth=&Hardiness=7&Height=Any&HeightDim=feet&Canopy=&Application=&Texture=&Wildlife=&Form=&Density=&FlowerColor=&FlowerColorJS=&FoliageColor=&FoliageColorJS=&FallColor=&FallColorJS=&FruitPeriod=&BarkColor=&BarkColorJS=&FlowerPeriod=&Variegation=&VariegationJS=&FruitColor=&FruitColorJS=&Edible=&BarkTexture=&SunShade=&Moisture=&Pollution=&SoilType=&pH=&Submit=Search],Eden Prairie, MinnesotaMinnesotaMinnesota is a U.S. state located in the Midwestern United States. The twelfth largest state of the U.S., it is the twenty-first most populous, with 5.3 million residents. Minnesota was carved out of the eastern half of the Minnesota Territory and admitted to the Union as the thirty-second state...
External links
- http://fletcher.ces.state.nc.us/programs/nursery/metria/metria11/warren/elm.htm Warren, K., J. Frank Schmidt & Son Co. (2002). The Status of Elms in the Nursery Industry in 2000.
- http://www.mortonarb.org/plantinfo/plantclinic/phc/New-Elms-For-The-Landscape.pdf. Miller, F. (2002). New elms for the landscape and urban forest.