Grasses differ quite a bit in their degree of drought hardiness. Fescue and Kentucky bluegrass or both quite susceptible to dry conditions. You might want to try any tougher grass depending on how cold it gets in your area.
Bermuda grass and zoysia grass or both good tough species and will do well in most parts of Georgia. Your County extension office can provide free information on choosing a lawn grass species and how to care for your lawn. I suggest you give them a call and request some of their free publications.
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