790.25 Lawful ownership, possession, and use of firearms and other weapons
(3)LAWFUL USES.--The provisions of ss. 790.053 and 790.06 do not apply in the following instances, and, despite such sections, it is lawful for the following persons to own, possess, and lawfully use firearms and other weapons, ammunition, and supplies for lawful purposes:
n) A person possessing arms at his or her home or place of business;
790.53 Open carrying of weapons.Tell what can be carried openly.
790.06 License to carry concealed weapon or firearm.--set requirements for concealed carry permits.
According to Florida State Statutes you may open carry at you home or you place of business.