The National Association of Landscape Professionals (formed by a merger of the Associated Landscape Contractors of America (ALCA) and the Professionals Lawn Care Association of America (PLCAA) is the trade association representing an industry of more than 1 million landscape, lawn care, tree care, irrigation, and horticulture professionals in the United States, Canada and overseas. We are committed to advancing the industry and helping our members succeed through advocacy, education, networking, training, and professional development.