'Galaxy' magnolia (Magnolia × 'Galaxy')

‘Galaxy’ magnolia is unique among magnolia cultivars for its single-stemmed pyramidal habit; graceful, ascending branch structure; and dark red-purple flowers in spring before leaves appear. Flowers open a little later in spring than most other magnolias, reducing the risk of frost damage to its beautiful blooms.

swamp white oak (Quercus bicolor)

White oaks are among the most loved of American trees, typically reaching heights of fifty to eighty feet at maturity. Though not as tall as many other hardwood species of eastern forests, mature white oaks are impressive nonetheless, with broad canopies and strong lower branches reaching parallel to the ground.

Japanese zelkova (Zelkova serrata)

Japanese zelkovas are medium-sized trees with an attractive, vase-shaped crown, fine-textured foliage, and exfoliating bark. On older specimens like this one, patches of bark peel away to expose a mottling of orange and cinnamon tones.

atlas cedar (Cedrus atlantica)

Atlas cedar is an evergreen conifer native to the Atlas Mountains of northern Africa. This gorgeous tree displays a loose pyramidal form with ascending tiers of layered branching and silvery, blue-green needles.

maidenhair tree (Ginkgo biloba)

Ginkgo (Ginkgo biloba), the oldest living tree on earth, has survived for over 230 million years ago and thrives today as one of the world's most resilient and dependable street trees. Its distinctively fan-shaped leaves are both beautiful and instantly recognizable.

American Sweetgum (Liquidambar styraciflua)

American sweetgums, with their neatly compact, upright crown and tall stature, are a prized shade tree in native forests of the eastern United States. They can grow over 100 feet tall, and are recognizable by their five-lobed, star-shaped leaves and fruits resembling spiky balls.

common horsechestnut (Aesculus hippocastanum)

Common horsechestnuts, native to the Balkan range of Eastern Europe, are unique shade trees with a broad, rounded crown and a mature height of up to 75 feet. In mid-spring, they bloom with upright panicles of showy white flowers with red or yellow markings and long, attractive stamens.

London planetree (Platanus × hispanica)

Discovered to be one of the most resilient urban street trees in 19th and 20th century Philadelphia, London Planes are planted in many locations across campus, particularly along Locust Walk.

green ash (Fraxinus pennsylvanica)

Green ashes are among the most prevalent hardwood trees in North America, loved for their tall stature, furrowed bark, and yellow fall color. Ashes are threatened by an exotic beetle, the emerald ash borer, necessitating Penn’s urban forestry consultants to create a management plan to preserve our valuable ashes from damage.

Kentucky coffeetree (Gymnocladus dioicus)

Kentucky coffeetrees are a unique leguminous tree native to the Southeastern United States. The tree has a coarse, irregular form with large branches, compound leaves, and large fruits resembling bean-pods on female trees.

stewartia species (Stewartia sp.)

Stewartia is a medium-sized tree maturing to 30-40 feet tall with a strongly pyramidal habit. Its slender, smooth branches display beautifully exfoliating patches of silver, orange cream, and reddish-brown.

common sassafras (Sassafras albidum)

Sassafras is a medium-sized understory tree native to the Eastern and Midwestern United States. The tree is not only beautiful, but has a long cultural and natural history with Native tribes and early European settlers.