In 2011, the Governor of Washington State signed into law a bill which, with some exceptions, prohibits the display and retail sale of turf fertilizers that contain phosphorus, and the use of such fertilizers on turf.  Some exceptions apply, including turf where a soil test deems that phosphorus is deficient.  


Click here to see the Washington State Department of Agriculture's resources about the phosphorus law


Soiltest Farm Consultants can do a lawn/garden soil test to determine if you need to apply phosphorus fertilizer!



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