Large, 60-year old specimens of exotic trees give Tamanend Park its special character. There are Giant Sequoias and Dawn Redwoods. Also, there is a Paperbark Birch, Bur
Oak, a Swamp Cypress and a Staghorn Sumac near the bridge. There is a William Penn Treaty Elm, a fifth generation scion of the great elm tree in the Shakamaxon section
of Philadelphia. This elm was planted on William Penn's birthday in 1983.