Crews selected and harvested trees planted at the 9/11 Memorial from within a 500-mile radius of the World Trade Center site, with additional ones coming from locations in Pennsylvania and in Maryland near Washington, D.C., areas impacted on September 11, 2001.
Swamp white oaks were picked because of their durability and leaf color. In fall, the leaf color ranges from amber to a golden brown – and sometimes pink. The trees can grow to reach heights as tall as 60 feet in conditions similar to those on the plaza. The trees will never be identical, growing at different heights and changing leaves at different times, a physical reminder that they are living individuals.