Marietta, Georgia is in USDA Hardiness Zones 7b.Click to see full answer. Correspondingly, what growing zone is North Georgia?North Georgia was set in Zone 7, with winter lows between 0 and 10 degrees. In 1990, the map was revised and the former “10 degree difference” zones were divided into two sub-zones. Cobb county and above became Zone 7a and everything below that point down to Macon became Zone 7b.Subsequently, question is, what planting zone is Canton GA? Additional Gardening Related Data for Zipcode 30114 – Canton, Georgia 1990 Hardiness Zone: Zone 7a: 0F to 5F Average First Frost: October 21 – 31 Average Last Frost: April 1 – 10 Koppen-Geiger Climate Zone: Cfa – Humid Subtropical Climate Ecoregion: 66g – Southern Metasedimentary Mountains Similarly, it is asked, what growing zone is South Georgia? Georgia was divided into three parts, placing us in Zone 7 (north Georgia) Zone 8 (middle Georgia) and Zone 9(south Georgia).What is the coldest month in Atlanta? January
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