American Institute of Architects "advocates for the value of architecture and give architects the resources they need to do their best work. Our work drives positive change through the power of design."

American Society of Landscape Architects "s 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."

American Society of Landscape Architects -- Illinois Chapter "is one of the largest chapters of ASLA in the nation with almost 500 members."

Association of Professional Landscape Designers "is dedicated to advancing the profession of landscape design and to promoting the recognition of landscape designers as qualified and dedicated professionals."

CELA "is composed of virtually all the programs of higher learning in landscape architecture in the United States, Canada, Australia and New Zealand. ... [with a mission to] encourage, support and further education in the field of landscape architecture specifically related to teaching, research, scholarship, and public service."

CLARB "works to protect the public’s health, safety and welfare by establishing and promoting professional licensure standards. Their members are the licensure boards across the United States, Canada and Puerto Rico.
They prepare, administer and score the Landscape Architect Registration Examination (L.A.R.E.) which assesses the ability of prospective licensees to protect the public’s health, safety and welfare.

IFLA "represents 76 national associations from Africa, the Americas, Europe and Asia Pacific, and a newly emerging region in the Middle East. Our mission is to create globally sustainable and balanced living environments for the benefit of humanity worldwide."

The International Society of Arboriculture "promotes the professional practice of arboriculture and fosters a greater worldwide awareness of the benefits of trees." The ISA Certified Arborists certification is voluntary program with six different credentials to certify criteria in training, knowledge, and experience.