Blueberries are a favorite fruit for snacking, baking, and making jams and jellies.  Blueberry plants are a northern deciduous fruit that needs a long cold winter period to set fruit. Until recently this meant they were not suitable to the mild winters in Florida.  Within the past few years, however, the University of Florida has developed a series of hybrid blueberry plants that require less than 400 chill hours (between 32 and 45 degrees) each winter.  The two southern blueberries that are now available are the southern variety of Rabbiteye, and the Southern Highbush.  With proper site selection and preparation, these varieties will grow well in Florida. 
As a general rule different cultivars of the Rabbiteye blueberry grow best in Northern Florida and the Southern Highbush varieties are well suited for the central area of the state.  Blueberries require acidic soil, so the more organic matter that can be mixed in the better.  It helps to amend the site with large amounts of peat moss, cow manure, and other organic compost such as pine straw or bark.  Adding sulfer can also help increase acidity.  Ideally the soil PH should test between 4.0 and 5.5.  The area should also be well drained and the plants must be mulched heavily to control the soil temperature in the summer months.
Plants should be set in a sunny area with 4 to 5 feet between plantings.  Plants will grow up to 12 feet high.  Dig the hole twice as wide as the root ball and make sure the roots are planted 4 inches deep. When planting bare root specimens, soak the roots first and make a mound of soil in the bottom of the hole. Then spread the saturated roots out over the dirt mound and spread mulch around the top of the soil surface. Then water often and fertilize on a regular schedule.  The best time to plant in the south is December through February.  Florida blueberries require cross pollination with another variety to produce fruit.  Bees and other pollinating insects will generally be drawn to the plants once established.
The names of Southern Highbush varieties include Emerald, Gulf Coast, Jewel, Millenia, Sharpblue, Star, and Windsor. Rabbiteye plants to look for are Beckyblue, Bluegreen, Bonita, Brightwell, Chaucer, Climax, Powderblue, Tifblue, and Woodard. It is preferable to mix several varieties of the same cultivar in the garden to ensure cross pollination. Fertilize and water regularly and within a couple of years the plants should produce a first-rate crop.
There are good resources on the internet that provide detailed instructions and helpful tips on growing Florida Blueberries.  The University of Florida has several on-line publications including “Blueberry Gardener’s Guide”, “Pruning Blueberry Plants In Florida”, and “New Plants For Florida: Blueberry”.  Additionally the Florida Blueberry Growers Association has several guides.  A quick search on Google will produce other Southern Blueberry growing information. 
Plants can be purchased in local garden centers or through the mail.  Make sure to read the detailed descriptions to ensure the plant is suitable for your location, and when ordering through the mail find out how the seller ships the plant (bare root or in soil). This will make a difference in the planting time and procedure.