Anything you can find at your local garden center, or Home Depot or even Walmart and Kmart will have flowers that are nice and should live well in south GA.
If you are looking for perennials that come back every year and are drought resistant, maybe consider plants like Sedums. They have small flowers, are very hardy in diff. kinds of soils and don't require the baby-ing that delicate flowers need, esp. if you are away from home often and can't water every day.
at 10:48 PM on Jun. 2, 2009