Zelkova serrata
Today the arboretum contains more than 13,000 labelled plants of over 2,500 types, representing the temperate floras of North America, Asia, and Europe, with a primary focus on Asia. Significant collections include native azaleas, conifers, hollies, magnolia species, maples, roses, and witch hazels. The arboretum has identified 17 trees in its collection as outstanding specimens: "Abies cephalonica", "Abies holophylla", "Acer buergerianum", "Aesculus flava", "Cedrus libani" var. "atlantica" 'Glauca', "Cercidiphyllum japonicum", "Fagus engleriana", "Fagus sylvatica" f. "pendula", "Metasequoia glyptostroboides", "Pinus bungeana", "Platanus" × "acerifolia", "Quercus alba", "Quercus" × "benderi", "Tsuga canadensis" f. "pendula", "Ulmus glabra" 'Horizontalis', "Ulmus parvifolia", and "Zelkova serrata".