Summer is the rainy season in Florida—it rains almost every day. Summer storms can wash fertilizer off lawns into the bays, rivers, lakes and oceans that are the source of our fun. Fertilizer pollution contributes to algae blooms and kill fish. That’s why more than 90 communities throughout Florida – including Sarasota and Manatee counties – have restricted the use of lawn and landscape fertilizers from June-September. If you want to fertilize your lawn, do it in April and early October, using a slow-release product that nourishes the grass gradually over a longer period. In summer, you can use products without nitrogen or phosphorus (look for fertilizer bags where the first two numbers are 0-0) or apply iron in late summer to green up your grass without promoting growth.