Probably any generic NPK fertilizer will do in the short term. Osmocote and Nutricote have the NPK and some micronutrients also but the best approach is to get your soil tested by a soil lab. There are loads of them in Florida. When I had my soil tested the lab made specific recommendations for my garden based on agricultural fertilisers rather than mass market mixes. They also indicated amounts per 1000 square feet which varied for the different locations I took samples from.
The products were:
Calcium ammonium nitrate 27% N, 6% Ca
Triple superphosphate 20% P, 17% Ca
Agricultural Gypsum 23% Ca, 19% S
Potassium sulphate. 40% K, 18% S
Chelated iron
They are easily available but are not treated in any way for slow release. As Simon suggests, it also depends on the stage your plants are in and what you want to accomplish. Nitrogen promotes leaf growth at a cost to fruit production. Phosphorus is important for flowering and thus fruit production. There are other important minerals such as iron, calcium, magnesium, sulphur so it is a good idea to get your soil tested and even modify your applications to the season.
Ultimately, mulch or compost are an important addition for soil fertility.