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

Planting zone for Cumming, GA

Cumming, GA is in USDA zone 8a across its 3 ZIP codes. The median last spring frost is April 4 and the first fall frost November 4.

Cumming on the zone map

Outlined: its 3 ZIP code areas · 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.

Zone8a10 to 15 °F
ZIP codes3
Last frostApr 4
First frostNov 4
Growing season214 days

8a 3 ZIPs

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Cumming, 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 Cumming, GA

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 4median — 50% chance of a later frost
Safe for tender plantsApril 19only 10% chance of frost after
First fall frostNovember 4median — 10% chance by Oct 23
Growing season214 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 20 and returns around November 15.

From the NOAA station Cumming 2n, GA, elevation 1,142 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 Cumming

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Feb 21 – Mar 7
SpinachSow outdoors · Feb 21 – Mar 14
Broccoli, cabbageStart indoors · Jan 24 – Feb 7
Broccoli, cabbageTransplant · Mar 14 – Mar 28
Onion setsPlant outdoors · Mar 7 – Mar 21
PotatoesPlant outdoors · Mar 14 – Mar 28
LettuceSow outdoors · Mar 7 – Mar 21
Carrots, beetsSow outdoors · Mar 14 – Mar 28
TomatoesStart indoors · Feb 7 – Feb 21
TomatoesTransplant · Apr 11 – Apr 25
Peppers, eggplantStart indoors · Jan 24 – Feb 7
Peppers, eggplantTransplant · Apr 18 – May 2
BeansSow outdoors · Apr 11 – Apr 25
Sweet cornSow outdoors · Apr 11 – Apr 25
Cucumbers, squashSow outdoors · Apr 11 – Apr 25
Fall lettuce, spinachSow outdoors · Sep 9 – Sep 23
GarlicPlant cloves · Oct 21 – Nov 25
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 4) and first fall frost (Nov 4) 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 30040 came on Feb 18 — about the same time as the 1991–2020 average (Feb 17).

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 8a in Georgia

572 plants native to the lower 48 states, recorded in Georgia, and rated by the USDA to survive 10 °F or colder — the bottom of zone 8a. Each links to its USDA PLANTS profile.

Trees 88

American basswood100 ft · blooms late spring · low shade tolerance · to −46 °FAmerican beech80 ft · blooms mid spring · low shade tolerance · to −44 °FAmerican chestnut115 ft · blooms early summer · high shade tolerance · to −33 °FAmerican elm120 ft · blooms early spring · medium shade tolerance · to −46 °FAmerican sycamore100 ft · blooms spring · medium shade tolerance · to −34 °FAtlantic white cedar50 ft · blooms spring · medium shade tolerance · to −36 °F

Shrubs 138

Allegheny serviceberry35 ft · blooms early spring · low shade tolerance · to −38 °Faloe yucca15 ft · blooms early summer · medium shade tolerance · to −1 °Falternateleaf dogwood25 ft · blooms mid spring · low shade tolerance · to −47 °FAmerican beautyberry6 ft · blooms early summer · medium shade tolerance · to −8 °FAmerican hazelnut10 ft · blooms spring · medium shade tolerance · to −33 °FAmerican holly40 ft · blooms mid spring · low shade tolerance · to −20 °F

Wildflowers & perennials 169

American bur-reed3 ft · blooms indeterminate · medium shade tolerance · to −33 °FAmerican eelgrass1 ft · blooms mid summer · high shade tolerance · to −33 °FAmerican lotus3 ft · blooms mid summer · high shade tolerance · to −36 °FAmerican pokeweed7 ft · blooms mid summer · low shade tolerance · to −33 °FAmerican spongeplant0.5 ft · blooms mid spring · high shade tolerance · to −24 °FAmerican water horehound1.8 ft · blooms early summer · low shade tolerance · to −38 °F

Grasses 152

American cupscale3 ft · blooms early summer · high shade tolerance · to −18 °Fautumn bluegrass1.5 ft · blooms late spring · medium shade tolerance · to −8 °Fawlfruit sedge4 ft · blooms mid spring · low shade tolerance · to −38 °Fbeaked spikerush3 ft · blooms late spring · high shade tolerance · to −28 °Fbig bluestem6 ft · blooms summer · high shade tolerance · to −46 °Fbig cordgrass8 ft · blooms spring · high shade tolerance · to −3 °F

Vines 13

American bittersweet15 ft · blooms spring · low shade tolerance · to −38 °FAmerican wisteria50 ft · blooms spring · low shade tolerance · to −3 °Fcatbird grape30 ft · blooms late spring · medium shade tolerance · to −13 °Fcupseed30 ft · blooms late spring · low shade tolerance · to −3 °Fdevil's darning needles15 ft · blooms mid summer · medium shade tolerance · to −38 °Ffrost grape83 ft · blooms late spring · medium shade tolerance · to −23 °F

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 Cumming, GA.

Soil in Cumming, GA

The soil mapped at the center of ZIP 30040 is Rion — gravelly sandy loam, well drained.

TextureGravelly sandy loamdrains and warms fast; dries out and needs more feeding
pH5.5moderately acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter1.25%low — add compost
Hydrologic groupBwater soaks in moderately
Farmland classNot prime farmlandUSDA classification

Map unit: Edgemont (Rion) stony sandy loam, steep phase.

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 30040; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Cumming, GA

Summer high89 °Faverage high, July
Winter low31 °Faverage low, January
Hot days32days a year at 90 °F or more
Freezing nights67nights a year at 32 °F or less
Growing degree days4,626base 50 °F — the season’s usable heat
Longest day14 h 27 mindaylight on June 21
Shortest day9 h 52 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation56.4 inper year, rain and melted snow
Snowfall1 inper year

Average high and low, by month

20°30°40°50°60°70°80°90°100°32 °FJanuary: average high 51 °F, low 31 °F 51°31° JanFebruary: average high 56 °F, low 33 °F 56°33° FebMarch: average high 63 °F, low 40 °F 63°40° MarApril: average high 72 °F, low 46 °F 72°46° AprMay: average high 79 °F, low 56 °F 79°56° MayJune: average high 85 °F, low 64 °F 85°64° JunJuly: average high 89 °F, low 67 °F 89°67° JulAugust: average high 88 °F, low 67 °F 88°67° AugSeptember: average high 82 °F, low 60 °F 82°60° SepOctober: average high 73 °F, low 49 °F 73°49° OctNovember: average high 63 °F, low 39 °F 63°39° NovDecember: average high 54 °F, low 34 °F 54°34° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″6″January: 5.39 in precipitation, 0.1 in snowfall 5.4 JanFebruary: 5.15 in precipitation, 0.2 in snowfall 5.2 FebMarch: 5.16 in precipitation, 0.3 in snowfall 5.2 MarApril: 4.32 in precipitation 4.3 AprMay: 4.23 in precipitation 4.2 MayJune: 4.69 in precipitation 4.7 JunJuly: 4.89 in precipitation 4.9 JulAugust: 4.92 in precipitation 4.9 AugSeptember: 4.03 in precipitation 4.0 SepOctober: 3.97 in precipitation 4.0 OctNovember: 4.42 in precipitation 4.4 NovDecember: 5.20 in precipitation 5.2 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Cumming 2n, GA (2 mi away); precipitation: Cumming 2n, GA (2 mi away). Daylight is calculated from latitude.

ZIP codes in Cumming

300288a
10 to 15 °F
300408a
10 to 15 °F
300418a
10 to 15 °F

Georgia planting zones →

Questions about Cumming

What planting zone is Cumming, GA?

Cumming, GA is in USDA hardiness zone 8a on the 2023 map (8a: 10 to 15 °F).

When is the last frost in Cumming, GA?

The median last spring frost is April 4 and the median first fall frost is November 4 (NOAA 1991–2020 normals, Cumming 2n station).

When can I plant a garden in Cumming, GA?

Cool-season crops like peas and spinach go in around Feb 21 – Mar 14; tomatoes, peppers, beans and squash after about Apr 11, once frost risk has passed.

What kind of onions grow in Cumming, GA?

Intermediate onions: the longest day is 14 h 27 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

How much rain and snow does Cumming, GA get?

About 56.4 inches of precipitation a year and 1 inches of snowfall (NOAA 1991–2020 normals).