Urweltmammutbaum
Founders' Grove includes Franklinia ("Franklinia alatamaha"), Dawn Redwood ("Metasequoia glyptostroboides"), Japanese White Pine ("Pinus parviflora"), Weeping Norway Spruce ("Picea abies" cv. 'Pendula'), Pagoda Tree ("Styphnolobium japonicum"), Serbian Spruce ("Picea omorika"), and Sourwood ("Oxydendrum arboreum"). Trees added in subsequent years include American Sycamore ("Platanus occidentalis"), Common Hackberry ("Celtis occidentalis"), Common Persimmon ("Diospyros virginiana"), Osage-orange ("Maclura pomifera"), and Green Ash ("Fraxinus pennsylvanica").