ASLA is founded in New York City with 11 charter members, including one woman, Beatrix Farrand. The first ASLA Annual Meeting also takes place.
Harvard University becomes the first university to offer a degree in landscape architecture.
National examining board is established and continues until 1948.
American Society of Landscape Architects Inc. is incorporated in Massachusetts.
First Code of Professional Ethics is adopted; ASLA membership reaches 252.
Katherine Bashford is elected first female chapter president by the Southern California chapter.
California adopts registration of the title “Landscape Architect,” followed by the adoption of practice acts by New York and Connecticut.
ASLA headquarters offices moves to Washington, D.C.; ASLA membership reaches 1,647.
ASLA medal program is established; today, ASLA’s expanded medals and awards program continues to recognize outstanding achievement in landscape architecture with annual awards.
ASLA Foundation is incorporated with the purpose to solicit and coordinate funds for research and other educational projects; it is reorganized in the mid-1970s as the independent Landscape Architecture Foundation (LAF).
ASLA Professional Awards program begins and continues to recognize outstanding works in landscape architecture each year.
CLARB is incorporated as a separate organization and begins administering the Uniform National Exam (UNE) for landscape architectural licensure; UNE later evolves into the Landscape Architecture Registration Exam (LARE), which continues today.
Official policy supporting equal opportunities and treatment for women in the profession is approved by ASLA’s Board of Trustees.
A new Student Awards program was announced after a long hiatus.
Edward Pryce, FASLA, becomes the first African American Fellow.
ASLA membership reaches 5,000.
Darwina Neal, FASLA, becomes ASLA’s first female national president.
Brian S. Kubota, FASLA, becomes ASLA's first Asian American national president.
The Sustainable SITES Initiative® (SITES)® is established as a partnership between ASLA and the Lady Bird Johnson Wildflower Center at the University of Texas at Austin with the goal of developing the first national rating system for sustainable landscapes with or without buildings. In 2006 the United States Botanic Garden joins the partnership.
Residential Design category added to the ASLA Professional Awards.
The Landscape Architecture Continuing Education System (LA CES) is established as a collaborative project of ASLA, Canadian Society of Landscape Architects (CSLA), Council of Educators in Landscape Architecture (CELA), Council of Landscape Architectural Registration Boards (CLARB), and Landscape Architectural Accreditation Board (LAAB) to offer continuing professional education in landscape architecture.
Perry Howard, FASLA, becomes the first African American national president.
Mark Focht, FASLA, becomes the first openly gay national president.
National Landscape Architecture Month in April becomes World Landscape Architecture Month as ASLA works with colleagues around the globe to raise awareness of the profession.
Urban Design category added to the ASLA Professional Awards.
ASLA becomes an official NGO observer to the United Nations Framework Convention on Climate Change (UNFCCC).
The U.S. Department of Homeland Security designates landscape architecture a STEM discipline.
SuLin Kotowicz, FASLA, becomes the first Asian American women national president.