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National Association of Landscape Professionals

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History

The Associated Landscape Contractors of America (ALCA) was founded in 1961. In collaboration with NASA, the ALCA sponsored the NASA Clean Air Study, which was published in 1989. After the study was published, the ALCA formed the Foliage for Clean Air Council, later renamed the Plants for Clean Air Council (PCAC), a nonprofit that promoted the use of plants in homes and offices. PCAC was dissolved in 2000 due to lack of funding.

In 1993, the ALCA established the Certified Landscape Professional (CLP) credential, which was later expanded into what is now the Landscape Industry Certified program.

The Professional Lawn Care Association of America (PLCAA) was founded in 1979. PLANET was formed on January 1, 2005, when the ALCA and the PLCAA merged. It was then rebranded as the National Association of Landscape Professionals on April 1, 2015.

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