The Watershed Center Grand Traverse Bay is reminding area residents that it is illegal in Michigan to use phosphorus fertilizers on residential and commercial lawns without a need. However, such fertilizers are not illegal to sell so it is up to home and business owners to follow the restrictions.

"Excess nutrients, such as phosphorus, are one of the biggest threats to water quality in our area," says Sarah U'Ren, program director at The Watershed Center. "Rain can quickly wash phosphorus off lawns and into creeks, lakes and the bay. This can lead to increased algae and aquatic plant growth, which can have negative effects on water quality, fisheries, recreation and property values."

The Michigan Fertilizer Law was passed in 2012 to restrict unnecessary phosphorus applications and to help protect Michigan's water resources.

Consumers are encouraged to look for lawn fertilizers with zero phosphorus in them. This is identifiable by the '0' in the middle number describing the fertilizer blend. To find out exactly what a lawn needs, soil tests are available online www.msusoiltest.com or at any MSU-Extension office.