Founded in 1899, the American Society of Landscape Architects (ASLA), a 501(c)(6) organization, is the national professional association for landscape architects, representing more than 15,000 members in 49 professional chapters and 72 student chapters. Members of the Society use the “ASLA” suffix after their names to denote membership and their commitment to the highest ethical standards of the profession.

https://www.asla.org/