Southern Blue Flag

Panhandle

Escambia, Franklin, Gadsden, Holmes, Jackson, Jefferson, Leon, Liberty, Okaloosa, Santa Rosa, Wakulla, Walton, Washington

North

Baker, Clay, Duval, Nassau, Putnam, St. Johns

19 of 67 counties, from research-grade iNaturalist observations. They show where people have photographed it, not every place it grows — absence here isn't proof it's absent.