🌿 National/Professional Associations
- National Association of Landscape Professionals (NALP) – The leading trade organization covering lawn‑care, landscape design/build, irrigation, tree care, and interior plantscaping professionals in the US; offers certification, advocacy, and education.
🔗 landscapeprofessionals.org
- American Society of Landscape Architects (ASLA) – The national association for licensed landscape architects; supports advocacy, education, and professional fellowship.
🔗 asla.org
- Association of Professional Landscape Designers (APLD) – Dedicated to non‑licensed landscape design professionals; offers certification (CPLD), resources, and regional chapters.
🔗 apld.org
- Irrigation Association (IA) – Focused on efficient irrigation technology and professional certification.
- International Society of Arboriculture (ISA) – Global organization for arborists; provides certification and tree-health education.
- Tree Care Industry Association (TCIA) – Serves commercial tree care businesses with standards, accreditation, and safety resources.
- Professional Grounds Management Society (PGMS) – Supports professionals who manage grounds in institutional or corporate environments.
- American Horticultural Society (AHS) – Dedicated to advancing horticulture and home gardening education.
🌎 Specialized & Ecological Associations
- Ecological Landscape Alliance (ELA) – Promotes organic and sustainable landscape design and practices.
- Perennial Plant Association (PPA) – Focus on professionals and enthusiasts who specialize in perennial plants.
- Green Roofs for Healthy Cities (GRHC) – Advocates for green roofs and living architecture in urban landscapes.
- American Public Gardens Association (APGA) – Supports public gardens with resources for conservation and education.
- Society for Ecological Restoration (SER) – Focused on restoring ecological systems and habitat design.
🌱 State & Regional Associations
- Native Plant Societies – Each state has chapters (e.g., California Native Plant Society) promoting native landscaping.
- California Landscape Contractors Association (CLCA) – Key association for framing, installation, and contracting in California.
- Florida Nursery, Growers and Landscape Association (FNGLA) – One of the largest state associations for horticultural and landscape professionals.
- Texas Nursery & Landscape Association (TNLA) – Supports nursery and landscape professionals in Texas.
🏛️ Related Professional Bodies
- National Council of Architectural Registration Boards (NCARB) – Certification body for licensed architects, including professional landscape architects (PLA).
- U.S. Green Building Council (USGBC) – Offers LEED certification, a key credential for sustainable design professionals.