A fertilizer-free zone is an area where you may not fertilize at any time of the year. These designated zones are near seawalls, wetlands, ponds, lakes or any body of water. When fertilizer reaches the water, it causes poor water quality and algae blooms, which in turn reduce oxygen and cause fish kills.
Pinellas County’s Fertilizer Ordinance
Fertilizer shall NOT be applied within 10 feet from the top bank of any surface water, landward edge of the top of a seawall, or wetland. The “top of bank” is the flat land portion before land begins to slope downward towards a waterbody/seawall.