Morris Arboretum

Compton and Bloomfield
U.S. National Register of Historic Places
U.S. Historic district
A bridge at the Morris Arboretum
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Location	100 East Northwestern Avenue, Philadelphia and Whitemarsh Township, Pennsylvania
Coordinates	40°05′23″N 75°13′27″W / 40.08972°N 75.22417°W / 40.08972; -75.22417Coordinates: 40°05′23″N 75°13′27″W / 40.08972°N 75.22417°W / 40.08972; -75.22417
Area	175 acres (71 ha)
Built	1889
Architect	Theophilus Parsons Chandler, Jr.; Wilson Eyre, Jr., et al.
Architectural style	Classical Revival, Late Gothic Revival
NRHP Reference #	78002445
Added to NRHP	December 22, 1978

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

The arboretum was formerly the estate of John and Lydia Morris, who purchased and landscaped much of the arboretum's current site starting from the 1880s. 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.

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.