Morris Arboretum

Public park, University of Pennsylvania, USA

The Morris Arboretum & Gardens of the University of Pennsylvania (37 ha / 92 acres) is the official arboretum of the Commonwealth of Pennsylvania. The Arboretum is open daily except for major holidays. It is located at 100 East Northwestern Avenue, Chestnut Hill, Philadelphia, Pennsylvania.

The Arboretum was formerly the estate of John T. (1847 1915) and Lydia T. Morris (1849 1932), a brother and sister who purchased and landscaped much of the arboretum's current site beginning in 1887. John Morris was interested in growing plants from around the world, including those collected in China by E. H. Wilson around 1900, and many of today's specimens date to Morris' original plantings. The estate became a public arboretum in 1933, after Lydia Morris' death.

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.