Landscaping, Lawn Care and Tree Services Trade Associations

AmericanHort

The national trade association uniting the horticulture supply chain—growers, retailers, landscapers, and allied firms—for advocacy, market development, education, and networking.

https://www.americanhort.org Membership: 20,000

American Society of Landscape Architects (ASLA)

The U.S. professional association for landscape architects, providing advocacy, education, and community to more than 15,000 members across all 50 states and beyond.

https://www.asla.org Membership: 15,000

Associated Landscape Contractors of Colorado (ALCC)

Colorado’s statewide landscape contractors association offering advocacy, training, certification, and networking for companies operating in the state’s unique climate.

https://www.alcc.com Membership: 600

California Landscape Contractors Association (CLCA)

California’s statewide contractors association supporting licensed landscape and related contractors with education, events, awards, and advocacy.

https://clca.org Membership: 2,500

Florida Nursery, Growers & Landscape Association (FNGLA)

The nation’s largest state nursery and landscape association, representing growers, landscape professionals, retailers, and allied firms across seven divisions.

https://fngla.org Membership: 1,500

Golf Course Superintendents Association of America (GCSAA)

The leading association for golf course managers and superintendents, providing education, research, and advocacy for turf and course management professionals worldwide.

https://www.gcsaa.org Membership: 20,000

Illinois Landscape Contractors Association (ILCA)

Illinois’ statewide trade association advancing professionalism among landscape contractors and suppliers through education, networking, and events.

https://ilca.net Membership: 800

International Society of Arboriculture (ISA)

The global membership and credentialing body for arborists, delivering education, certifications, research, and public outreach on proper tree care.

https://www.isa-arbor.com Membership: 24,000

Irrigation Association

The leading membership organization for irrigation manufacturers, dealers, designers, contractors, water providers, and end users—focused on efficient water management, standards, education, and advocacy.

https://www.irrigation.org Membership: 1,800

Michigan Green Industry Association (MGIA)

Michigan’s statewide green industry association serving contractors and allied firms with education, certification, and business resources.

https://www.landscape.org Membership: 800

Minnesota Nursery & Landscape Association (MNLA)

Minnesota’s oldest and largest horticultural trade association, representing firms across nursery, landscape, irrigation, lawn care, arboriculture, and allied services.

https://www.mnla.biz Membership: 900

Ohio Green Industry Association (OGIA)

Ohio’s statewide green industry association for contractors, garden centers, growers, arborists, and suppliers—providing training, advocacy, and networking.

https://ogia.org Membership: 1,300

Outdoor Power Equipment Institute (OPEI)

The international trade association for outdoor power equipment and small engine manufacturers and suppliers—supporting standards, advocacy, and industry promotion.

https://www.opei.org Membership: 100

Snow & Ice Management Association (SIMA)

North America’s trade association for professional snow and ice management contractors, delivering training, certifications, best practices, and advocacy.

https://www.sima.org Membership: 1,200

Sports Field Management Association (SFMA)

The national association for professionals who manage and maintain sports fields at parks, schools, colleges, and pro venues—providing education, standards, and recognition.

https://www.sportsfieldmanagement.org Membership: 2,700

Texas Nursery & Landscape Association (TNLA)

Texas’ statewide nursery and landscape association representing growers, landscapers, retailers, irrigators, and suppliers with advocacy, education, and events.

https://www.tnlaonline.org Membership: 2,000

Tree Care Industry Association (TCIA)

The U.S. trade association for commercial and utility tree care companies, offering safety programs, accreditation, training, and industry standards.

https://treecareindustryassociation.org Membership: 2,300

Urban and Community Forestry Society (UCFS)

Formerly the Society of Municipal Arborists, UCFS is the professional society for urban forestry leaders and municipal arborists, delivering education, City Trees magazine, and programs like the Municipal Forestry Institute.

https://ucfsociety.org Membership: 1,350

Utility Arborist Association (UAA)

The member-driven organization for utility vegetation management and right-of-way tree professionals, providing education, safety resources, and events.

https://www.gotouaa.org Membership: 5,000

Washington Association of Landscape Professionals (WALP)

Washington State’s association for landscape professionals, promoting professionalism, education, and integrity among contractors and suppliers.

https://www.walp.org Membership: 300