In 1991, the National Fund for the United States Botanic Garden was initially established as a 501(c)3 to fund and build the National Garden. Designed as a living laboratory, the 3-acre National Garden educates visitors about the diversity of American plants and their importance to the environment including the benefits of sustainable gardening. It was the first public-private project undertaken by the Office of the Architect of the Capital and raised $11.5 million. After the National Garden opened in 2006, the National Fund adopted a new mission focused on supporting the educational programs at the USBG.

Rose Garden area, National Garden