- American Nursery & Landscape Association
 - Membership organisation includes divisions for landscapers, nursery professionals, and providers of retail garden products and services. - Associated Landscape Contractors of America
- Trade association for the landscape contracting industry offers an abundance of resources for professional members and non-members. Includes a database of landscaping contractors.
- Professional Lawn Care Association of America
- Trade association for residential and commercial lawn care professionals.
 Institute of Groundsmanship
- Represents groundsmen, greenkeepers, and others involved in landscaping, horticulture, sport turf, and amenity turf management.- British Association of Landscape Industries
- National body representing landscape contractors in the U.K. aiming to improve and maintain the standing of the landscape industry.
- Turfgrass Producers International
- Nonprofit corporation to assist in and encourage through research and education the improvement of lawns and sport turf.
- Irrigation & Green Industry Network
- Online magazine for the professional landscape contractor, irrigation designer, golf course superintendent, landscape architect, nurseries and the green industry.
- Lawn & Garden Marketing and Distribution Association
- Promoting growth and profitability through effective marketing and distribution of products and services.
- Metropolitan Detroit Landscape Association
- Including their publication Landscape & Garden Weekly.
- Georgia Turfgrass Foundation Trust
- Learn about the environmental benefits of lawns, sport turf, and continuing research into new breeds and management techniques.
- National Greenhouse Manufactures Association
- A professional trade organisation for the manufacturers and suppliers of greenhouses and their components.
- European Federation of Interior-landscape Groups (eFIG)
- Unites landscaping professionals and suppliers nationwide.
- Michigan Turfgrass Foundation
- Supports research at Michigan State University to find better turfgrasses and better methods of turfgrass maintenance.
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