Newnan, Georgia, sits in USDA hardiness zone 8a — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
The conditions favor cabbage, fig, california poppy, and collard greens, among others — though every individual site edits that list with its own soil, sun, and drainage.
Even in Newnan, no two yards are alike.
A low spot, a south-facing slope, or a stand of trees moves the frost date and sun across a single Newnan lot. Enter your address and we'll score 1,086 plants against your land's actual soil, sun, and frost.
We read public map data around Newnan — soil, climate, flood, and parcel records. How we handle your address.
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Newnan — the short answer
Newnan, Georgia: USDA zone 8a, about 246 days between hard freezes, across 13K acres of city.
- USDA zone
- 8a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 15
- Coweta County normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Nov 16
- Coweta County normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~246
- Coweta County normal — NOAA 1991–2020, nearest to this town
- City area
- 13K acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. No 30-year normal resolves at this town’s own centroid, so the hard-freeze dates are Coweta County’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 8a is Newnan's average, not your lot's — a low corner or a tree line moves it. Against Newnan's 246-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Newnan
Each reading below is measured for Newnan itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsNewnan runs about 246 days between hard freezes (read from Coweta County, the closest normal to Newnan) — a long growing season.
There is slack for succession plantings and slow-finishing crops: many vegetables can be sown twice, and the heat-lovers have time to ripen fully.
Plan a second sowing of quick crops after the first comes out, and use the fall window most gardeners let sit idle.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredNewnan sits in USDA hardiness zone 8a.
The zone sets which perennials, shrubs, and fruit trees live through an average winter here — a plant rated for a colder zone is a safe bet, one rated warmer needs winter protection or gets treated as an annual.
Match perennials and fruit to the zone before you buy, so nothing you plant is a gamble against the cold.
USDA PHZM 2023
The kind of country Newnan is in
Newnan sits in the Piedmont — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Newnan's own centroid rather than borrowed from Coweta County.
What Grows in Newnan
Every plant below cleared Newnan's own zone 8a and its 246-day season. Each card opens that plant's Georgia profile. How we score.
Is it too late to plant in Newnan?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Feb 15; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 15 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 16 — long-season crops need about 90 days of runway, quick greens only 30. A long window like this one runs successions deep into fall — and even its last weeks take quick greens and garlic.
What's on the federal record near Newnan
Closest first, within ~10 miles of Newnan. Listing isn't leaking, and distance isn't exposure.
- OLD COWETA COUNTY JAILUnderground Storage Tanks · 850 ft
- COWETA CO/CENTRAL HIGH SCHOOLUnderground Storage Tanks · 2300 ft
- CALDWELL TANKS ALLIANCE LLC - LOWER FAYETTEVILLE FACILITYToxics Release Inventory · 2500 ft
- BROWN STEEL/BROWN FACILITYUnderground Storage Tanks · 2500 ft
- BP FOODMARTUnderground Storage Tanks · 0.5 mi
- KMART #7001Underground Storage Tanks · 0.7 mi
- KROGER GA 363Underground Storage Tanks · 0.8 mi
- KROGER 363-11Brownfields · 0.8 mi
- WULF'S PRECISION SHARPENINGUnderground Storage Tanks · 0.8 mi
- FIVE POINTS GROCERYUnderground Storage Tanks · 0.9 mi
- FORMER PIKE GROCERYUnderground Storage Tanks · 0.9 mi
- NEWNAN LAKE CHEVRONUnderground Storage Tanks · 0.9 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Newnan's center, not your beds. Run your own address for what's upwind of you specifically.
Environmental Intelligence
The counts behind that headline — every source type on the record near Newnan.
Total Sites
328
within ~10 miles of Newnan
Risk Level
Elevated
Highest-severity
4 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Newnan
Severity Distribution
within ~10 miles of Newnan
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Newnan, two things run higher than the national average within ~10 miles of Newnan — Toxics Release Inventory (26 sites) and PFAS (3 sites). That's not a problem with your land — it's information about it.
Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.
PFAS: PFAS (per- and polyfluoroalkyl substances) are called "forever chemicals" because they do not biodegrade.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Test irrigation water source — this is the primary pathway for PFAS to reach garden crops.
Check your specific parcel in Newnan
Get exact proximity distances to contamination sources for your specific parcel — plus soil, sun, drainage, and 1,086 plant recommendations.
25+ data sources read at your address, not the Newnan average
Your land is one point inside Newnan
Everything above resolves to Newnan as a whole — one PHZM band, read across 13K acres, with hard-freeze dates borrowed from Coweta County’s record because no 30-year normal resolves at this city’s own centroid. Your parcel is one point inside that footprint. Slope, tree cover, a low spot that pools cold air, and what is in the soil are all resolved at the address, and none of them are visible at city scale. That is the honest boundary of this page, and the reason the next step is a reading of your own ground rather than a better local average.
Your Lot vs the Newnan Average
Newnan Average
- ●USDA Zones 8a, averaged across Newnan
- ●One soil character for all of Newnan
- ●Frost dates read at Newnan's scale: Mar 15 to Nov 16
YOUR Parcel
- ✓Your exact zone, not Newnan's 8a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Newnan
Pull a site-specific report for your exact address in Newnan, Georgia — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Newnan averages can't show:
We read public map data around Newnan — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Newnan average
How we know this about Newnan
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at this city’s own centroid; hard-freeze dates from NOAA 1991–2020 28°F normals at Coweta County’s record, because none resolves here; boundaries and acreage from US Census TIGER/Line 2025; the contamination records from the federal sources named in their beats above. Soil is not read at city grain anywhere on this page — there is no city-resolution survey in our data, which is why you will find no soil grid here rather than a statewide one wearing a local label. The resolution ledger below names every figure this page inherited.
Common questions about Newnan
When does frost risk typically end in Newnan?
The last hard freeze (28°F) in Newnan typically lands around Mar 15, per NOAA 1991–2020 climate normals — earlier than the light-frost dates most charts quote. That marks the hard freeze, not the last light frost — lighter frosts keep biting past it, which is why tender transplants here wait until about Apr 5.
When is the first frost in Newnan?
The first hard freeze (28°F) in Newnan typically arrives around Nov 16, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 2, so the watching starts about Oct 17 — about 246 days after the spring freeze cleared.
How long is the growing season in Newnan?
Measured between 28°F hard freezes, Newnan sees about 246 frost-free days — roughly Mar 15 through Nov 16, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 5 to Nov 2, about 211 days.
Is the soil safe to grow vegetables in Newnan?
The federal record around Newnan is a meaningful one — 328 documented sites, mostly Underground Storage Tanks entries (219), the nearest Underground Storage Tanks record about 0.2 miles out — so a soil test before new food beds is a sensible precaution here, not a reason to hold back from growing. Remember that proximity to a documented site is information, not a diagnosis of any one yard; the contamination map shows exactly what sits where.
How do I protect my plants from frost in Newnan?
From about Oct 17 the job here turns from planting to protecting — the last start even a 30-day crop can finish. As the season closes around the first 28°F hard freeze near Nov 16 (NOAA 1991–2020 climate normals), three moves buy time: row cover or an old sheet over tender plants on still, clear nights; water the soil the afternoon before a freeze, so it holds warmth overnight; and harvest tomatoes, peppers and basil before Nov 16. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Newnan's scale — its 8a band and its 246-day season. Your yard writes its own version of Newnan's numbers: we read soil, sun, drainage and frost at your exact address. Try it for 14 days — no card required.
What this page reads at Newnan’s own scale
5 of the readings below were taken at Newnan's own scale — the 12,721 acres it covers and 328 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- Newnan's own USDA hardiness band, zones 8aUSDA PHZM 2023
- 328 documented contamination sites on the federal record near Newnan, the closest Underground Storage Tanks record about 0.2 miles out from the town centreFederal environmental registers
- Newnan's boundary and the 12,721 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8a and a ~246-day seasonGrowable Ground crop-matching engine
- The ecoregion at Newnan's own centroid, the PiedmontUS EPA Level III Ecoregions
Inherited from a wider read
- The 28°F hard-freeze dates — Newnan has no normal of its own, so its county's is the closest measured readfrom Coweta County
- Soil character — no town-scale survey exists, so Newnan's 12,721 acres read through its county's SSURGO summaryfrom Coweta County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Coweta County
- The growing challenges every Georgia grower plans around — written at state scale, so they stay on the state guidefrom Georgia
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Coweta County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Newnan's 12,721 acreswhy one lot differs from the next →
- Which side of Newnan you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 12,721 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.2 miles out, measured from the town centrehow we read the record →
- Where cold air settles, which slopes face the sun, and which way the wind runs on your own ground — measured at your address, and averaged away by any Newnan-wide figureread your own land →
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