Knowing and Growing Asian Maples - The Maple Society

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Knowing and Growing Asian Maples - The Maple Society

THE 4TH INTERNATIONAL MAPLESYMPOSIUM22 - 23 October 2011


By the NumbersJanuaryJulyHigh Low High Low°F 39.6 25.8 88.0 69.9°C 4.2 -3.4 31.1 21.1


By the NumbersUSDAHardiness Zone 6b0 to -5 °F-20.6 to -23.3°CAnnualPrecipitation42inches1067 mm


Plant Exploration Objectives• Broaden the genetic pool of known species– Extend hardiness and increase vigor– Broaden adaptability to difficultmicroclimates• Increase insect and disease resistance• Conserve rare species• Select improved horticultural forms• Evaluate & introduce appropriate new species


Morris ArboretumExpeditions• Korea: 1979, 1981, 1984, 1989, 1991• China: 1981, 1991, 1993, 1994 (2),1995, 1996, 1997, 1998,2002, 2005, 2008, 2010, 2011• Japan: 2007• Southern Appalachian Mountains: 2000• Armenia: 2002• Republic of Georgia: 2004• England, Belgium: 2004


Acer pseudosieboldianum


Acer triflorum


Acer pseudosieboldianumssp. takesimense


Acer mono ssp. okomotoanum


Morris ArboretumExpeditions• Korea: 1979, 1981, 1984, 1989, 1991• China: 1981, 1991, 1993, 1994 (2),1995, 1996, 1997, 1998,2002, 2005, 2008, 2010, 2011• Japan: 2007• Southern Appalachian Mountains: 2000• Armenia: 2002• Republic of Georgia: 2004• England, Belgium: 2004


North America – ChinaPlant Exploration Consortium (NACPEC)• Arnold Arboretum of Harvard University• The Dawes Arboretum• Holden Arboretum• Longwood Gardens• Morris Arboretum of the University of Pennsylvania• The Morton Arboretum• University of British Columbia Botanic Garden• USDA/ARS Germplasm Office• U. S. National Arboretum


People’s Republic of China


Plant Exploration Objectives• Broaden the genetic pool of known species– Extend hardiness and increase vigor– Broaden adaptability to difficultmicroclimates• Increase insect and disease resistance• Conserve rare species• Select improved horticultural forms• Evaluate & introduce appropriate new species


Acer tegmentosum


Acer truncatum


Acer stachyophyllumssp. betulifolium


Acer caesium ssp. giraldii


Acer caudatum ssp. multiserratum


Acer pectinatum ssp. maxiimowiczii


Acer davidii (s.l.)


Acer griseum


Acer tsinglingense


Acer yui


Acer shenkanense (tricaudatum)


Acer ceriferum


Acer erianthum


Acer oliverianum


Acer henryi


pseudosieboldianum (Palmata)triflorum (Trifoliata)takesimense (Palmata)okomotoanum (Platanoideae)tegmentosum (Macrantha)truncatum (Platanoideae)stachyophyllum betulifoium (Arguta)davidii (Macrantha)griseum (Trifoliata)tsinglingense (Lithocarpa)yui (Pentaphylla (Trifida))shenkanense (Platanoideae)ceriferum (Palmata)erianthum (Palmata)caesium (Acer)caudatum multiserratum (Spicata)pectinatum max. (Macrantha)oliverianum (Palmata)#028 (Palmata?)henryi (Negundo)

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