Map of Florida denoting months of availability for watermelon. Image has a table on top showing months of availability as April through July and November through December. The map indicates that watermelon is predominantly grown in Jackson, Suwannee, Columbia, Gilchist, Alachua, Levy, Marion, Sumter, Manatee, Hardee, DeSoto, Highlands, Charlotte, Lee, Hendry and Collier counties.