Landscape Maintenance Association 
Trade association promoting sound landscaping and horticulture practices in Florida.
http://www.floridalma.org/Professional Lawn Care Association of America
Trade association for residential and commercial lawn care professionals.
http://www.plcaa.org/
LawnCafe
Series of forums for green industry professionals, on topics including commercial lawn care, chemicals, irrigation, hardscaping and equipment, nursery operations, and industry news.
http://www.lawncafe.com/
