Starting Monday, June 1, summer fertilizer restrictions lock in across much of the Tampa Bay region. Pinellas, Hillsborough, Manatee and Sarasota will bar both the sale and application of lawn and landscape fertilizers that contain nitrogen and phosphorus during the rainy season. The fine print is different in each county, with some adding winter closures and extra rules for commercial applicators, so homeowners and landscapers are urged to check their local ordinances before spreading anything on the grass.
As reported by FOX 13 Tampa Bay, the bans kick in June 1 in multiple counties around the bay. The Southwest Florida Water Management District keeps a county-by-county breakdown of blackout dates and ordinance links for west-central Florida, which doubles as a handy reference for anyone trying to avoid a citation.
County roundup: what the rules say
Pinellas County’s rainy-season restrictions run from June 1 through Sept. 30 and ban the sale and application of fertilizers that contain nitrogen and-or phosphorus during that window; phosphorus can only be used if a qualifying soil test shows it is needed. Pinellas County also requires a 10-foot fertilizer-free buffer next to water bodies and offers Best Management Practices training for professional applicators.
Hillsborough specifics and training
Hillsborough follows the Environmental Protection Commission’s Chapter 1-15 rule, which sets up a June-through-September restricted season and adds weather-based prohibitions, including no application within 36 hours of a forecast of 2 inches or more of rain. The rule also spells out training and decal requirements for commercial applicators, along with enforcement contacts for complaints and questions. Full details are available from the EPC of Hillsborough County.
In Manatee County, the ordinance labels the summer window a fertilizer "blackout," meaning no nitrogen or phosphorus applications from June 1 through Sept. 30. Sarasota enforces a similar restricted season to help protect bay seagrasses and coastal waters. UF-IFAS materials and county websites explain product rules, buffer requirements and other basics for residents and professionals, with UF/IFAS Manatee County and other regional sources providing summaries and how-to guidance.
Hernando County has both a summer blackout and an additional winter closed season that bans nitrogen and phosphorus during specific parts of the year, while Citrus County posts its own fertilizing schedule and soil-test rules on a county conservation page. Hernando County and Citrus County both advise residents to check local calendars before buying or applying products. Polk and Pasco counties, in contrast, do not use a seasonal blackout but prohibit fertilizer application immediately before heavy rain or severe-weather advisories. The year-round approach and weather timing are laid out in detail by UF/IFAS Polk County.
How to avoid fines - and help the bay
Across the region, the basics of staying out of trouble look pretty similar: hold off on fertilizing if rain is in the forecast, sweep stray granules off sidewalks and driveways, and keep grass clippings out of storm drains. Many counties urge residents to pick summer-safe products such as iron-only blends rather than high-nitrogen mixes during the wet season. Local rules also call for deflector shields on broadcast spreaders and set annual nitrogen limits, so check product labels closely and ask any hired landscaper about Green-Industry BMP credentials. Pinellas County offers practical fertilizer guidance and links to training courses that apply across much of the region.
Local experts told FOX 13 Tampa Bay that these seasonal bans are aimed squarely at cutting nutrient runoff and the harmful algal blooms that follow. "They’re horrible," master arborist Lee Claxton said of nutrient pollution, while ecologist CJ Greene warned that "the greener the lawns, the greener the ponds." In other words, a lush yard can come with a murky price tag for nearby waterways.
For anyone still unsure which rules apply at home, county water-conservation or environmental pages are the first stop. The Southwest Florida Water Management District fertilizer restrictions by county page is a useful starting point that offers a quick map of counties and ordinance links, and each county site lists enforcement contacts and available training resources.
