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

Planting zone for 30475 — Vidalia, GA

ZIP code 30475 (Vidalia, Toombs County) is in USDA zone 9a: the coldest winter night averages 20 to 25 °F. The median last spring frost is March 15 and the first fall frost November 18.

Where ZIP 30475 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 15

First frostNov 18

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 Vidalia, 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 Vidalia, GA

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostMarch 15median — 50% chance of a later frost

Safe for tender plantsMarch 31only 10% chance of frost after

First fall frostNovember 18median — 10% chance by Nov 3

Growing season250 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 3 and returns around December 5.

From the NOAA station Baxley 5nnw, GA — 23 miles away, elevation 213 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 30475

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Feb 1 – Feb 15

SpinachSow outdoors · Feb 1 – Feb 22

Broccoli, cabbageStart indoors · Jan 4 – Jan 18

Broccoli, cabbageTransplant · Feb 22 – Mar 8

Onion setsPlant outdoors · Feb 15 – Mar 1

PotatoesPlant outdoors · Feb 22 – Mar 8

LettuceSow outdoors · Feb 15 – Mar 1

Carrots, beetsSow outdoors · Feb 22 – Mar 8

TomatoesStart indoors · Jan 18 – Feb 1

TomatoesTransplant · Mar 22 – Apr 5

Peppers, eggplantStart indoors · Jan 4 – Jan 18

Peppers, eggplantTransplant · Mar 29 – Apr 12

BeansSow outdoors · Mar 22 – Apr 5

Sweet cornSow outdoors · Mar 22 – Apr 5

Cucumbers, squashSow outdoors · Mar 22 – Apr 5

Fall lettuce, spinachSow outdoors · Sep 23 – Oct 7

GarlicPlant cloves · Nov 4 – Dec 9

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 15) and first fall frost (Nov 18) 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 30475 came on Feb 2 — 3 days later than the 1991–2020 average (Jan 30).

average
Jan 302026
Feb 2

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 Vidalia, GA.

Soil in Vidalia, GA

The soil mapped at the center of ZIP 30475 is Cowarts — 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 matter1.25%low — add compost

Hydrologic groupCwater soaks in slowly

Farmland classprime farmlandUSDA classification

Map unit: Cowarts loamy sand, 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 30475; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Vidalia, GA

Summer high93 °Faverage high, July

Winter low37 °Faverage low, January

Hot days95days a year at 90 °F or more

Freezing nights37nights a year at 32 °F or less

Growing degree days6,293base 50 °F — the season’s usable heat

Longest day14 h 16 mindaylight on June 21

Shortest day10 h 02 mindaylight on December 21

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

Precipitation47.5 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: Baxley 5nnw, GA (23 mi away); precipitation: Stillmore, GA (20 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

3 of the 8 nearest ZIP codes are in a different zone — elevation and distance from water change winter lows quickly.

Mount Vernon, GA · 12 mi

304738b

Uvalda, GA · 13 mi

304708b

Tarrytown, GA · 14 mi

304219a

Collins, GA · 15 mi

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

Questions about 30475

What planting zone is ZIP code 30475?

ZIP code 30475 (Vidalia, 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 Vidalia, GA?

The median last spring frost (32 °F) near 30475 is March 15; after March 31 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Baxley 5nnw station.

When is the first frost in Vidalia, GA?

The median first fall frost near 30475 is November 18, giving a median frost-free growing season of 250 days.

When should I plant tomatoes in 30475?

Start tomato seeds indoors around Jan 18 – Feb 1 and set transplants outside around Mar 22 – Apr 5, one to three weeks after the median last frost.

How much rain and snow does 30475 get?

About 47.5 inches of precipitation a year (NOAA 1991–2020 normals, Stillmore station).

How hot do summers get in Vidalia, GA?

The average high peaks at 93 °F in July, with about 95 days a year at 90 °F or more.

What kind of soil does 30475 have?

The USDA soil survey maps Cowarts at the center of ZIP 30475: loamy sand, well drained, pH about 5.3 (strongly acidic).

Did spring come early in Vidalia, GA in 2026?

Spring leaf-out near 30475 came on Feb 2 in 2026, 3 days later than the 1991–2020 average (Jan 30), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Vidalia, GA?

Short-day onions: the longest day near 30475 is 14 h 16 min, so summer days stay under about 14 h 20 min, so long-day varieties won’t bulb.

Did the zone for 30475 change?

Yes. The 2012 USDA map put 30475 in zone 8b; the 2023 map puts it in zone 9a. The newer map uses 1991–2020 data and more weather stations.