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

Planting zone for 29922 — Garnett, SC

ZIP code 29922 (Garnett, Hampton County) is in USDA zone 8b: the coldest winter night averages 15 to 20 °F. The median last spring frost is March 6 and the first fall frost November 26.

Where ZIP 29922 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 6

First frostNov 26

2012 zone8b

Same zone as on the 2012 map. 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 Garnett, SC…

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 Garnett, SC

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostMarch 6median — 50% chance of a later frost

Safe for tender plantsMarch 26only 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 14 and returns around December 15.

From the NOAA station Hampton 1s, SC — 20 miles away, elevation 95 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 29922

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Jan 23 – Feb 6

SpinachSow outdoors · Jan 23 – Feb 13

Broccoli, cabbageStart indoors · Dec 26 – Jan 9

Broccoli, cabbageTransplant · Feb 13 – Feb 27

Onion setsPlant outdoors · Feb 6 – Feb 20

PotatoesPlant outdoors · Feb 13 – Feb 27

LettuceSow outdoors · Feb 6 – Feb 20

Carrots, beetsSow outdoors · Feb 13 – Feb 27

TomatoesStart indoors · Jan 9 – Jan 23

TomatoesTransplant · Mar 13 – Mar 27

Peppers, eggplantStart indoors · Dec 26 – Jan 9

Peppers, eggplantTransplant · Mar 20 – Apr 3

BeansSow outdoors · Mar 13 – Mar 27

Sweet cornSow outdoors · Mar 13 – Mar 27

Cucumbers, squashSow outdoors · Mar 13 – Mar 27

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 6) 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 29922 came on Feb 3 — 3 days later than the 1991–2020 average (Jan 31).

average
Jan 312026
Feb 3

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 South Carolina

566 plants native to the lower 48 states, recorded in South Carolina, 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 Garnett, SC.

Soil in Garnett, SC

The soil mapped at the center of ZIP 29922 is Wahee — fine sandy loam, somewhat poorly drained.

TextureFine sandy loamdrains and warms fast; dries out and needs more feeding

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

DrainageSomewhat poorly drainedconsider raised beds

Organic matter2.75%moderate

Hydrologic groupC/Dslow when drained; wet otherwise

Farmland classFarmland of statewide importanceUSDA classification

Map unit: Wahee fine sandy loam.

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 29922; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Garnett, SC

Summer high92 °Faverage high, July

Winter low39 °Faverage low, January

Hot days70days a year at 90 °F or more

Freezing nights27nights a year at 32 °F or less

Growing degree days6,461base 50 °F — the season’s usable heat

Longest day14 h 18 mindaylight on June 21

Shortest day10 h 00 mindaylight on December 21

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

Precipitation50.6 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: Hampton 1s, SC (20 mi away); precipitation: Newington 0.5 Sse, GA (13 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

Newington, GA · 11 mi

299188b

Estill, SC · 11 mi

313299a

Springfield, GA · 12 mi

South Carolina planting zones →

Questions about 29922

What planting zone is ZIP code 29922?

ZIP code 29922 (Garnett, SC) 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 Garnett, SC?

The median last spring frost (32 °F) near 29922 is March 6; after March 26 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Hampton 1s station.

When is the first frost in Garnett, SC?

The median first fall frost near 29922 is November 26, giving a median frost-free growing season of 267 days.

When should I plant tomatoes in 29922?

Start tomato seeds indoors around Jan 9 – Jan 23 and set transplants outside around Mar 13 – Mar 27, one to three weeks after the median last frost.

How much rain and snow does 29922 get?

About 50.6 inches of precipitation a year (NOAA 1991–2020 normals, Newington 0.5 Sse station).

How hot do summers get in Garnett, SC?

The average high peaks at 92 °F in July, with about 70 days a year at 90 °F or more.

What kind of soil does 29922 have?

The USDA soil survey maps Wahee at the center of ZIP 29922: fine sandy loam, somewhat poorly drained, pH about 5.3 (strongly acidic).

Did spring come early in Garnett, SC in 2026?

Spring leaf-out near 29922 came on Feb 3 in 2026, 3 days later than the 1991–2020 average (Jan 31), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Garnett, SC?

Short-day onions: the longest day near 29922 is 14 h 18 min, so summer days stay under about 14 h 20 min, so long-day varieties won’t bulb.