Salt water is not required. This species is cold sensitive near the northern ends of its range and may die back during extreme freezes. Mangroves are protected and you may not trim or remove them. See this Florida DEP web page for the latest information: http://www.dep.state.fl.us/central/Home/SLERP/Mangroves/mangroves.htm Very good for coastal stabilization. Can act as a specimen plant in coastal areas. This tree is noted for its prop roots.