The front of my Florida home gets full sun. It's been a struggle to find anything that will grow there. I have tried for 12 years now, making annual trips to the box store garden centers and local nurseries. I buy plants that are labeled for full sun but few have made it through a Florida summer.
Mexican petunias have survived quite well.
This year I read about a place in Sarasota -- Florida Native Plants Nursery. Don and I took the ride to check it out. I wish I had heard about this place a long time ago! Sophie, the nursery manager, could not have been more knowledgeable and helpful.
Here is what we bought: