USDA Zone 9a prevails in Savannah, Georgia, due to its Coastal Plain location, flat terrain, and Atlantic Ocean proximity, maintaining average annual minimum temperatures between 20°F and 25°F (-6.7°C to -3.9°C).
Savannah transitioned from zone 8b to 9a in the 2023 USDA update, reflecting a warming trend observed in recent decades.
You can locate your Savannah USDA zone using our three tools given below, Zipcode to planting zone tool, location based interactive map or by using planting zone table.
Savannah Planting Zones by ZipCode
Planting Zone Savannah Map
Select or type your Savannah location in the selection box given below, to get its USDA Planting Zone information.
City Name
Savannah Area Planting Zone
Planting Zones
Planting Zones
Savannah Planting Zones Table
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Which Geographical Factors Influence Savannah’s Planting Zones?
Geographical factors such as elevation, the Atlantic Coastal Plain region, and proximity to the Savannah River and Atlantic Ocean influence the planting zones in Savannah, Georgia.
Coastal Plain Region: Savannah lies on the low-lying Atlantic Coastal Plain with elevations ranging from -16 to 108 feet (-5 to 33 meters). This low elevation and flat terrain contribute to its humid subtropical climate and sandy loam to clay soils, directly impacting planting zones.
Urban Heat Island Effect: As a medium-sized metropolitan area, Savannah experiences the urban heat island effect, causing higher urban temperatures than surrounding rural areas. This extends the growing season and affects plant growth patterns.
Savannah River and Coastal Features: The Savannah River, forming the northern city border, along with the Ogeechee River and coastal marshes, creates microclimates with varying soil moisture levels. These water features provide consistent moisture and ample rainfall, shaping local planting zones.
Savannah Planting Zones’ Impact on Soil
Savannah’s planting zones in Georgia have shaped distinctive Coastal Terraces soils, characterized by sandy, well-drained, slightly acidic profiles with low nutrient levels, supporting specific plant varieties.
The urban environment in Savannah has caused soil compaction, altered drainage, and introduced pollutants, especially in older industrial areas, where heavy metals pose challenges for gardeners. These issues reflect broader trends; as Yang and Zhang (2015) note in their study, urban soils suffer from reduced enzyme and microbial activity due to human impact, harming plant growth.
The region’s climate, planting zones, and geography dictate soil characteristics, determining which plants thrive locally.
Which Plants Perform Well in Savannah, Georgia?
Native plants are often the best performers as they are naturally adapted to Planting zones, local climate and soil conditions. Some plants that perform well in Savannah, Georgia’s planting zone are:
- Citrus varieties:
- Satsuma mandarins
- ‘Sinton’ citrangequat
- ‘Mr John’s Longevity’ citrangequat
- Razzlequat
- ‘Nippon’ orangequat
- Native plants:
- Pinus palustris (Longleaf pine)
- Quercus laevis (Turkey oak)
- Kalmia latifolia (Mountain laurel)
- Rhododendron minus (Piedmont rhododendron)
- Salt-tolerant plants:
- Spartina alterniflora (Smooth cordgrass)