Citrus, although I’ve just gotten started in the last couple of years (no fruit yet), pretty much everyone in Florida has citrus…Very few of which are cared for but still produce abundant fruit…so much in fact that a lot of the community service organizations will come around and pick it for you to take away…
the other thing I’ve had luck with are the native Florida blueberries, much smaller than the store bought variety and a bit of a pain to pick, but they grow well…