UF/IFAS has a working group that provides information on cold hardy citrus such as satsumas to farmers in northern Florida and southern GA and AL. Their latest newsletter gives information on how farmers can minimize the impacts of cold weather on their plants and a good list of resources for Florida (sadly, it does not extend into the other states) on where to get forecasts and sources of frost protection measures that can be sued to help reduce the impacts of cold weather on citrus. You can read the newsletter at https://citrusagents.ifas.ufl.edu/media/crecifasufledu/citrus-agents/sprague/docs/oct2020.pdf.

Source: Wunderground