Great care has been taken to select plants, shrubs and trees that are native to the Delaware and Wissahickon Valleys.
The Wissahickon Gate, along Chestnut Street, was created by sculptor Christopher T. Ray (1937-2000). The animals and plants depicted on the gates are native to the Wissahickon and Delaware Valleys. The Estuary Gate at the Ranstead entrance, also by sculptor Ray, is a tribute to the marshlands of New Jersey and Delaware, depicting moving water and islands, turtles and fish, a sky filled with migrating birds and sculpted reeds gently curved by the wind. The Fountain is a tribute to Native American totems.