Botanic Garden is supervised by the Congress through the Architect of the Capitol, who is responsible for maintaining the grounds of the United States Capitol. The USBG is open every day of the year, including federal holidays. It is the oldest continually operating botanic garden in the United States.HistoryThe Columbian Institute for the Promotion of Arts and Sciences in Washington, D.C., first suggested the creation of a botanic garden in 1816. The idea of establishing a botanic garden in Washington, D.C., was also supported by the Washington Botanical Society, organized in 1817, many of whose members were also members of the Columbian Institute, however this society disbanded in 1826.In 1820, President James Monroe set aside 5acre for a "national greenhouse." Dr. Edward Cutbush, founder and first president of the Columbian Institute, was one of the earliest advocates for a plant repository and saw the necessity for a botanical garden "where various seeds and plants could be cultivated, and, as they multiplied, distributed to other parts of the Union."
