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

Planting zone for 31534 — Douglas, GA

ZIP code 31534 (Douglas, Coffee County) is in USDA zone 9a: the coldest winter night averages 20 to 25 °F. The median last spring frost is March 5 and the first fall frost November 26.

Where ZIP 31534 is

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.

Zone9a20 to 25 °F

Coldest night−6.7 to −3.9 °C

Last frostMar 5

First frostNov 26

2012 zone8b

Was 8b 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 9a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Douglas, 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 Douglas, GA

JanFebMarAprMayJunJulAugSepOctNovDec

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

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

Safe for tender plantsMarch 24only 10% chance of frost after

First fall frostNovember 26median — 10% chance by Nov 6

Growing season267 daysfrost-free, median

A hard freeze (28 °F) usually ends around February 15 and returns around December 14.

From the NOAA station Douglas, GA — 2 miles away, elevation 233 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 31534

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Jan 22 – Feb 5

SpinachSow outdoors · Jan 22 – Feb 12

Broccoli, cabbageStart indoors · Dec 25 – Jan 8

Broccoli, cabbageTransplant · Feb 12 – Feb 26

Onion setsPlant outdoors · Feb 5 – Feb 19

PotatoesPlant outdoors · Feb 12 – Feb 26

LettuceSow outdoors · Feb 5 – Feb 19

Carrots, beetsSow outdoors · Feb 12 – Feb 26

TomatoesStart indoors · Jan 8 – Jan 22

TomatoesTransplant · Mar 12 – Mar 26

Peppers, eggplantStart indoors · Dec 25 – Jan 8

Peppers, eggplantTransplant · Mar 19 – Apr 2

BeansSow outdoors · Mar 12 – Mar 26

Sweet cornSow outdoors · Mar 12 – Mar 26

Cucumbers, squashSow outdoors · Mar 12 – Mar 26

Fall lettuce, spinachSow outdoors · Oct 1 – Oct 15

GarlicPlant cloves · Nov 12 – Dec 17

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 5) and first fall frost (Nov 26) 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 31534 came on Jan 27 — about the same time as the 1991–2020 average (Jan 29).

average
Jan 292026
Jan 27

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 9a in Georgia

603 plants native to the lower 48 states, recorded in Georgia, and rated by the USDA to survive 20 °F or colder — the bottom of zone 9a. 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 Douglas, GA.

Soil in Douglas, GA

The soil mapped at the center of ZIP 31534 is Tifton — loamy sand, well drained.

TextureLoamy sanddrains 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 groupBwater soaks in moderately

Farmland classNot prime farmlandUSDA classification

Map unit: Tifton-Urban land complex, 2 to 5 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 31534; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Douglas, GA

Summer high92 °Faverage high, July

Winter low38 °Faverage low, January

Hot days98days a year at 90 °F or more

Freezing nights33nights a year at 32 °F or less

Growing degree days6,352base 50 °F — the season’s usable heat

Longest day14 h 12 mindaylight on June 21

Shortest day10 h 06 mindaylight on December 21

Onions to growShort-daysummer days stay under about 14 h 20 min, so long-day varieties won’t bulb

Precipitation50.2 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: Douglas, GA (2 mi away); precipitation: Douglas 2.5 Wsw, GA (2 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 9a.

West Green, GA · 12 mi

315549a

Nicholls, GA · 14 mi

316509a

Willacoochee, GA · 14 mi

317989a

Wray, GA · 15 mi

All 3 ZIP codes in Douglas → · Georgia planting zones →

Questions about 31534

What planting zone is ZIP code 31534?

ZIP code 31534 (Douglas, GA) is in USDA hardiness zone 9a on the 2023 map: the coldest night of an average winter reaches 20 to 25 °F (−6.7 to −3.9 °C).

When is the last frost in Douglas, GA?

The median last spring frost (32 °F) near 31534 is March 5; after March 24 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Douglas station.

When is the first frost in Douglas, GA?

The median first fall frost near 31534 is November 26, giving a median frost-free growing season of 267 days.

When should I plant tomatoes in 31534?

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

How much rain and snow does 31534 get?

About 50.2 inches of precipitation a year (NOAA 1991–2020 normals, Douglas 2.5 Wsw station).

How hot do summers get in Douglas, GA?

The average high peaks at 92 °F in July, with about 98 days a year at 90 °F or more.

What kind of soil does 31534 have?

The USDA soil survey maps Tifton at the center of ZIP 31534: loamy sand, well drained, pH about 5.3 (strongly acidic).

Did spring come early in Douglas, GA in 2026?

Spring leaf-out near 31534 came on Jan 27 in 2026, about the same as the 1991–2020 average (Jan 29), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Douglas, GA?

Short-day onions: the longest day near 31534 is 14 h 12 min, so summer days stay under about 14 h 20 min, so long-day varieties won’t bulb.

Did the zone for 31534 change?

Yes. The 2012 USDA map put 31534 in zone 8b; the 2023 map puts it in zone 9a. The newer map uses 1991–2020 data and more weather stations.