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

Planting zone for 29446 — Green Pond, SC

ZIP code 29446 (Green Pond, Colleton County) is in USDA zone 9a: the coldest winter night averages 20 to 25 °F. The median last spring frost is March 1 and the first fall frost December 6.

Where ZIP 29446 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.

Zone9a20 to 25 °F
Coldest night−6.7 to −3.9 °C
Last frostMar 1
First frostDec 6
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 Green Pond, 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 Green Pond, SC

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMarch 1median — 50% chance of a later frost
Safe for tender plantsMarch 22only 10% chance of frost after
First fall frostDecember 6median — 10% chance by Nov 15
Growing season284 daysfrost-free, median

A hard freeze (28 °F) usually ends around February 10 and returns around December 29.

From the NOAA station Edisto Is Middleton Plantation, SC — 11 miles away, elevation 13 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 29446

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Jan 18 – Feb 1
SpinachSow outdoors · Jan 18 – Feb 8
Broccoli, cabbageStart indoors · Dec 21 – Jan 4
Broccoli, cabbageTransplant · Feb 8 – Feb 22
Onion setsPlant outdoors · Feb 1 – Feb 15
PotatoesPlant outdoors · Feb 8 – Feb 22
LettuceSow outdoors · Feb 1 – Feb 15
Carrots, beetsSow outdoors · Feb 8 – Feb 22
TomatoesStart indoors · Jan 4 – Jan 18
TomatoesTransplant · Mar 8 – Mar 22
Peppers, eggplantStart indoors · Dec 21 – Jan 4
Peppers, eggplantTransplant · Mar 15 – Mar 29
BeansSow outdoors · Mar 8 – Mar 22
Sweet cornSow outdoors · Mar 8 – Mar 22
Cucumbers, squashSow outdoors · Mar 8 – Mar 22
Fall lettuce, spinachSow outdoors · Oct 11 – Oct 25
GarlicPlant cloves · Nov 22 – Dec 27
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 1) and first fall frost (Dec 6) 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 29446 came on Feb 7 — 8 days later than the 1991–2020 average (Jan 30).

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).

Soil in Green Pond, SC

The soil mapped at the center of ZIP 29446 is Capers — clay, very poorly drained.

TextureClayholds water and nutrients; slow to drain and warm up
pH7.2neutral; most vegetables like 6.0–7.0
DrainageVery poorly drainedconsider raised beds
Organic matter15%high
Hydrologic groupDwater soaks in very slowly
Farmland classNot prime farmlandUSDA classification

Map unit: Capers association.

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 29446; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Green Pond, SC

Summer high90 °Faverage high, July
Winter low40 °Faverage low, January
Hot days73days a year at 90 °F or more
Freezing nights16nights a year at 32 °F or less
Growing degree days6,408base 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
Precipitation51.9 inper year, rain and melted snow

Average high and low, by month

30°40°50°60°70°80°90°100°32 °FJanuary: average high 59 °F, low 40 °F 59°40° JanFebruary: average high 63 °F, low 43 °F 63°43° FebMarch: average high 69 °F, low 48 °F 69°48° MarApril: average high 76 °F, low 56 °F 76°56° AprMay: average high 83 °F, low 64 °F 83°64° MayJune: average high 88 °F, low 71 °F 88°71° JunJuly: average high 90 °F, low 74 °F 90°74° JulAugust: average high 90 °F, low 74 °F 90°74° AugSeptember: average high 85 °F, low 69 °F 85°69° SepOctober: average high 78 °F, low 60 °F 78°60° OctNovember: average high 68 °F, low 49 °F 68°49° NovDecember: average high 61 °F, low 43 °F 61°43° Dec

Precipitation by month inches

0″2″4″6″8″January: 3.58 in precipitation 3.6 JanFebruary: 2.89 in precipitation 2.9 FebMarch: 3.88 in precipitation 3.9 MarApril: 3.55 in precipitation 3.5 AprMay: 2.79 in precipitation 2.8 MayJune: 5.21 in precipitation 5.2 JunJuly: 6.55 in precipitation 6.5 JulAugust: 7.46 in precipitation 7.5 AugSeptember: 5.19 in precipitation 5.2 SepOctober: 4.34 in precipitation 4.3 OctNovember: 2.61 in precipitation 2.6 NovDecember: 3.85 in precipitation 3.9 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Edisto Is Middleton Plantation, SC (11 mi away); precipitation: Edisto Is Middleton Plantation, SC (11 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 9a.

294529a
Jacksonboro, SC · 9 mi
299079a
Beaufort, SC · 9 mi
299149a
Dale, SC · 10 mi
299409a
Seabrook, SC · 10 mi
294389a
Edisto Island, SC · 11 mi
299019a
Beaufort, SC · 12 mi
299319a
Lobeco, SC · 14 mi
299049a
Beaufort, SC · 14 mi

South Carolina planting zones →

Questions about 29446

What planting zone is ZIP code 29446?

ZIP code 29446 (Green Pond, SC) 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 Green Pond, SC?

The median last spring frost (32 °F) near 29446 is March 1; after March 22 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Edisto Is Middleton Plantation station.

When is the first frost in Green Pond, SC?

The median first fall frost near 29446 is December 6, giving a median frost-free growing season of 284 days.

When should I plant tomatoes in 29446?

Start tomato seeds indoors around Jan 4 – Jan 18 and set transplants outside around Mar 8 – Mar 22, one to three weeks after the median last frost.

How much rain and snow does 29446 get?

About 51.9 inches of precipitation a year (NOAA 1991–2020 normals, Edisto Is Middleton Plantation station).

How hot do summers get in Green Pond, SC?

The average high peaks at 90 °F in July, with about 73 days a year at 90 °F or more.

What kind of soil does 29446 have?

The USDA soil survey maps Capers at the center of ZIP 29446: clay, very poorly drained, pH about 7.2 (neutral).

Did spring come early in Green Pond, SC in 2026?

Spring leaf-out near 29446 came on Feb 7 in 2026, 8 days later than the 1991–2020 average (Jan 30), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Green Pond, SC?

Short-day onions: the longest day near 29446 is 14 h 18 min, so summer days stay under about 14 h 20 min, so long-day varieties won’t bulb.

Did the zone for 29446 change?

Yes. The 2012 USDA map put 29446 in zone 8b; the 2023 map puts it in zone 9a. The newer map uses 1991–2020 data and more weather stations.