Stargazers tolerate heat in the Americana Horticultural Society's heat zones 1 to 8, where temperatures reach 86 degrees Fahrenheit or higher up to 120 days per year. Georgia lies in AHS heat zones 5 through 9. Stargazers can survive heat in most of the northern and central state.
Stargazers are cold hardy to U.S. Department of Agriculture Plant Hardiness Zones 4 through 8, with minimum temperatures between minus 30 to 10 degrees Fahrenheit. Georgia lies in zones 6b through 8; therefore, Stargazers are cold hardy in Georgia.
"Sunset" magazine's climate zone classifications factor cold hardiness, heat tolerance and several other characteristics in determining a plant's suitability for an environment. Stargazer is suitable for Sunset climate zone 32, in the northern one-third of the state.
Georgia's soils are ultisols, or relatively infertile, acidic forest soils. They're high in clay and low in calcium, potassium and magnesium. With additional lime, humus and drainage-improving organic material like peat moss, Georgia's soils will support Stargazers.