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

Planting zone for 30810 — Gibson, GA

ZIP code 30810 (Gibson, Glascock County) is in USDA zone 8b: the coldest winter night averages 15 to 20 °F. The median last spring frost is March 29 and the first fall frost November 7.

Where ZIP 30810 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.

Zone8b15 to 20 °F

Coldest night−9.4 to −6.7 °C

Last frostMar 29

First frostNov 7

2012 zone8a

Was 8a 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 8b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Gibson, 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 Gibson, GA

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostMarch 29median — 50% chance of a later frost

Safe for tender plantsApril 14only 10% chance of frost after

First fall frostNovember 7median — 10% chance by Oct 25

Growing season225 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 13 and returns around November 22.

From the NOAA station Warrenton, GA — 12 miles away, elevation 489 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 30810

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Feb 15 – Mar 1

SpinachSow outdoors · Feb 15 – Mar 8

Broccoli, cabbageStart indoors · Jan 18 – Feb 1

Broccoli, cabbageTransplant · Mar 8 – Mar 22

Onion setsPlant outdoors · Mar 1 – Mar 15

PotatoesPlant outdoors · Mar 8 – Mar 22

LettuceSow outdoors · Mar 1 – Mar 15

Carrots, beetsSow outdoors · Mar 8 – Mar 22

TomatoesStart indoors · Feb 1 – Feb 15

TomatoesTransplant · Apr 5 – Apr 19

Peppers, eggplantStart indoors · Jan 18 – Feb 1

Peppers, eggplantTransplant · Apr 12 – Apr 26

BeansSow outdoors · Apr 5 – Apr 19

Sweet cornSow outdoors · Apr 5 – Apr 19

Cucumbers, squashSow outdoors · Apr 5 – Apr 19

Fall lettuce, spinachSow outdoors · Sep 12 – Sep 26

GarlicPlant cloves · Oct 24 – Nov 28

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 29) and first fall frost (Nov 7) 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 30810 came on Feb 11 — 5 days later than the 1991–2020 average (Feb 6).

average
Feb 62026
Feb 11

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 8b in Georgia

590 plants native to the lower 48 states, recorded in Georgia, and rated by the USDA to survive 15 °F or colder — the bottom of zone 8b. 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 Gibson, GA.

Soil in Gibson, GA

The soil mapped at the center of ZIP 30810 is Cowarts — sandy loam, well drained.

TextureSandy loamdrains and warms fast; dries out and needs more feeding

pH5.3strongly acidic; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter0.75%low — add compost

Hydrologic groupCwater soaks in slowly

Farmland classFarmland of statewide importanceUSDA classification

Map unit: Cowarts sandy loam, 5 to 8 percent slopes, moderately eroded.

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 30810; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Gibson, GA

Summer high91 °Faverage high, July

Winter low33 °Faverage low, January

Hot days58days a year at 90 °F or more

Freezing nights58nights a year at 32 °F or less

Growing degree days5,228base 50 °F — the season’s usable heat

Longest day14 h 21 mindaylight on June 21

Shortest day9 h 57 mindaylight on December 21

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

Precipitation46.1 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: Warrenton, GA (12 mi away); precipitation: Gibson, GA (within 1 mile). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 8b.

Warrenton, GA · 10 mi

Georgia planting zones →

Questions about 30810

What planting zone is ZIP code 30810?

ZIP code 30810 (Gibson, GA) is in USDA hardiness zone 8b on the 2023 map: the coldest night of an average winter reaches 15 to 20 °F (−9.4 to −6.7 °C).

When is the last frost in Gibson, GA?

The median last spring frost (32 °F) near 30810 is March 29; after April 14 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Warrenton station.

When is the first frost in Gibson, GA?

The median first fall frost near 30810 is November 7, giving a median frost-free growing season of 225 days.

When should I plant tomatoes in 30810?

Start tomato seeds indoors around Feb 1 – Feb 15 and set transplants outside around Apr 5 – Apr 19, one to three weeks after the median last frost.

How much rain and snow does 30810 get?

About 46.1 inches of precipitation a year (NOAA 1991–2020 normals, Gibson station).

How hot do summers get in Gibson, GA?

The average high peaks at 91 °F in July, with about 58 days a year at 90 °F or more.

What kind of soil does 30810 have?

The USDA soil survey maps Cowarts at the center of ZIP 30810: sandy loam, well drained, pH about 5.3 (strongly acidic).

Did spring come early in Gibson, GA in 2026?

Spring leaf-out near 30810 came on Feb 11 in 2026, 5 days later than the 1991–2020 average (Feb 6), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Gibson, GA?

Intermediate onions: the longest day near 30810 is 14 h 21 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 30810 change?

Yes. The 2012 USDA map put 30810 in zone 8a; the 2023 map puts it in zone 8b. The newer map uses 1991–2020 data and more weather stations.