Phosphorus Free Lawn Fertilizer Ordinance

Van Buren County has joined other Lake Michigan shore counties, including Allegan, Muskegon, and Ottawa, in adopting an ordinance that requires phosphorus-free fertilizers for all lawns. This includes residential, commercial, and golf courses. Exceptions are made for agriculture, gardens, flowers, trees, shrubs, new lawns, and lawns with soil tests showing phosphorus is needed.

Phosphorus is usually not necessary for established lawns and can run off into lakes, rivers, and streams, causing algae growth. Just one pound of phosphorus can lead to 750 pounds of algae. This ordinance aims to improve water quality by preventing phosphorus from entering our waterways. The Van Buren County ordinance took effect on January 1, 2010.

On December 16, 2010, Michigan adopted a statewide law regulating the use of phosphorus fertilizers on lawns. For more information, see the State Law – PA 299 of 2010.

Fertilizer Application Tips

• Leave a three-foot buffer around lakes and waterways, including ditches and drains, to prevent fertilizer from entering the water.
• Use slow-release fertilizers. They release nutrients over time, ensuring proper absorption by plants. Liquid fertilizers can quickly enter water supplies during irrigation or rainstorms.
• Slow-release fertilizers usually need only one application per growing season. Reapplication is unnecessary, especially with native vegetation.

Related Links

• Two Rivers Coalition
• Van Buren Soil Conservation District