Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated Oct 29, 2026

Planting zone for 30120 — Cartersville, GA

ZIP code 30120 (Cartersville, Bartow County) is in USDA zone 8a: the coldest winter night averages 10 to 15 °F. The median last spring frost is April 5 and the first fall frost November 1.

Where ZIP 30120 is

Outlined: the ZIP code area · tap the map for the zone at any spot · scroll or pinch to zoom

Not the official USDA Plant Hardiness Zone Map. Zones come from the 2023 USDA hardiness-zone data by the PRISM Group, Oregon State University; we re-mapped and recolored them. The official map is at planthardiness.ars.usda.gov.

Zone8a10 to 15 °F

Coldest night−12.2 to −9.4 °C

Last frostApr 5

First frostNov 1

2012 zone7b

Was 7b on the 2012 map — half a zone warmer now. The zone is the one at the center of the ZIP code; hilly ZIPs can span two zones. What zone 8a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Cartersville, GA…

Forecast data: National Weather Service (api.weather.gov), public domain. This is not a warning service — for official frost and freeze warnings see weather.gov.

Frost dates in Cartersville, GA

JanFebMarAprMayJunJulAugSepOctNovDec

Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free

Last spring frostApril 5median — 50% chance of a later frost

Safe for tender plantsApril 21only 10% chance of frost after

First fall frostNovember 1median — 10% chance by Oct 20

Growing season211 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 20 and returns around November 13.

From the NOAA station Cartersville Airport, GA — 4 miles away, elevation 764 ft. NOAA NCEI U.S. Climate Normals 1991–2020, 32 °F threshold. Low spots and valleys can freeze later in spring than the station.

When to plant vegetables in 30120

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Feb 22 – Mar 8

SpinachSow outdoors · Feb 22 – Mar 15

Broccoli, cabbageStart indoors · Jan 25 – Feb 8

Broccoli, cabbageTransplant · Mar 15 – Mar 29

Onion setsPlant outdoors · Mar 8 – Mar 22

PotatoesPlant outdoors · Mar 15 – Mar 29

LettuceSow outdoors · Mar 8 – Mar 22

Carrots, beetsSow outdoors · Mar 15 – Mar 29

TomatoesStart indoors · Feb 8 – Feb 22

TomatoesTransplant · Apr 12 – Apr 26

Peppers, eggplantStart indoors · Jan 25 – Feb 8

Peppers, eggplantTransplant · Apr 19 – May 3

BeansSow outdoors · Apr 12 – Apr 26

Sweet cornSow outdoors · Apr 12 – Apr 26

Cucumbers, squashSow outdoors · Apr 12 – Apr 26

Fall lettuce, spinachSow outdoors · Sep 6 – Sep 20

GarlicPlant cloves · Oct 18 – Nov 22

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 5) and first fall frost (Nov 1) with the rules of thumb U.S. extension services publish. Cool-season crops take a light frost; warm-season crops do best once the soil is above about 60 °F.

When spring arrived in 2026

In 2026, spring leaf-out near 30120 came on Feb 17 — about the same time as the 1991–2020 average (Feb 15).

average
Feb 152026
Feb 17

JanFebMarAprMayJun

The Spring Index marks the day when accumulated warmth is enough for lilac and honeysuckle to leaf out — a widely used signal that the growing season has started. Source: USA National Phenology Network, www.usanpn.org — Spring Indices, first leaf, 2026 (data as of 2026-09-08) and 30-year average 1991–2020 (CC BY 4.0).

Native plants for zone 8a in Georgia

572 plants native to the lower 48 states, recorded in Georgia, and rated by the USDA to survive 10 °F or colder — the bottom of zone 8a. Each links to its USDA PLANTS profile.

Source: USDA, NRCS. 2026. The PLANTS Database (plants.usda.gov), National Plant Data Team — state distribution, native status and the “Temperature, Minimum” characteristic. Check light, moisture and soil needs before buying; local nurseries and your state native plant society can confirm what thrives in Cartersville, GA.

Soil in Cartersville, GA

The soil mapped at the center of ZIP 30120 is Fullerton — gravelly silt loam, well drained.

TextureGravelly silt loama good balance for most vegetables

pH5.5moderately acidic; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter1.5%low — add compost

Hydrologic groupBwater soaks in moderately

Farmland classNot prime farmlandUSDA classification

Map unit: Fullerton gravelly silt loam, 10 to 15 percent slopes.

Soil Survey Staff, Natural Resources Conservation Service, USDA. Soil Survey Geographic (SSURGO) Database, via Soil Data Access, accessed 2026-10-29. The soil at the center point of ZIP 30120; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Cartersville, GA

Summer high90 °Faverage high, July

Winter low31 °Faverage low, January

Hot days55days a year at 90 °F or more

Freezing nights68nights a year at 32 °F or less

Growing degree days4,858base 50 °F — the season’s usable heat

Longest day14 h 26 mindaylight on June 21

Shortest day9 h 52 mindaylight on December 21

Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully

Precipitation48.1 inper year, rain and melted snow

Average high and low, by month

Precipitation by month inches

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Cartersville Airport, GA (4 mi away); precipitation: Cartersville Airport, GA (4 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 8a.

301238a

Cassville, GA · 5 mi

301218a

Cartersville, GA · 5 mi

301378a

Emerson, GA · 7 mi

301788a

Taylorsville, GA · 8 mi

All 2 ZIP codes in Cartersville → · Georgia planting zones →

Questions about 30120

What planting zone is ZIP code 30120?

ZIP code 30120 (Cartersville, GA) is in USDA hardiness zone 8a on the 2023 map: the coldest night of an average winter reaches 10 to 15 °F (−12.2 to −9.4 °C).

When is the last frost in Cartersville, GA?

The median last spring frost (32 °F) near 30120 is April 5; after April 21 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Cartersville Airport station.

When is the first frost in Cartersville, GA?

The median first fall frost near 30120 is November 1, giving a median frost-free growing season of 211 days.

When should I plant tomatoes in 30120?

Start tomato seeds indoors around Feb 8 – Feb 22 and set transplants outside around Apr 12 – Apr 26, one to three weeks after the median last frost.

How much rain and snow does 30120 get?

About 48.1 inches of precipitation a year (NOAA 1991–2020 normals, Cartersville Airport station).

How hot do summers get in Cartersville, GA?

The average high peaks at 90 °F in July, with about 55 days a year at 90 °F or more.

What kind of soil does 30120 have?

The USDA soil survey maps Fullerton at the center of ZIP 30120: gravelly silt loam, well drained, pH about 5.5 (moderately acidic).

Did spring come early in Cartersville, GA in 2026?

Spring leaf-out near 30120 came on Feb 17 in 2026, about the same as the 1991–2020 average (Feb 15), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Cartersville, GA?

Intermediate onions: the longest day near 30120 is 14 h 26 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 30120 change?

Yes. The 2012 USDA map put 30120 in zone 7b; the 2023 map puts it in zone 8a. The newer map uses 1991–2020 data and more weather stations.