Florida is the only U.S. supplier of watermelons from December to April. Florida watermelons are harvested throughout the year, although the vast majority of production is harvested from May to July. This 26-page fact sheet profiles Florida watermelon crop production and pest management practices. Written by Wael M. Elwakil and Mark A. Mossler, and published by the UF Department of Agronomy, August 2013.
http://edis.ifas.ufl.edu/pi031