North Decatur, Georgia, sits in USDA hardiness zone 8a — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
Growers here do well with cabbage, fig, california poppy, and collard greens — with the usual caveat that any single yard's soil, sun, and drainage cast the deciding vote.
Even in North Decatur, 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 North Decatur 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 North Decatur — soil, climate, flood, and parcel records. How we handle your address.
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North Decatur — the short answer
North Decatur, Georgia: USDA zone 8a, about 269 days between hard freezes, across 3K acres of town.
- USDA zone
- 8a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 5
- DeKalb County normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Nov 29
- DeKalb County normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~269
- DeKalb County normal — NOAA 1991–2020, nearest to this town
- Town area
- 3K 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 DeKalb County’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 8a is North Decatur's average, not your lot's — a low corner or a tree line moves it. Against North Decatur's 269-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in North Decatur
Each reading below is measured for North Decatur itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsNorth Decatur runs about 269 days between hard freezes (read from DeKalb County, the closest normal to North Decatur) — close to year-round growing.
Frost is rarely the limit here; winter plantings are as real as summer ones, and the harder question is which crops shrug off the summer heat.
Grow cool-season crops through the mild winter, and choose heat-tolerant varieties for the summer beds.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredNorth Decatur 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 North Decatur is in
North Decatur sits in the Piedmont — EPA Level III, inside the wider Eastern Temperate Forests. That is read at North Decatur's own centroid rather than borrowed from DeKalb County.
What Grows in North Decatur
Every plant below cleared North Decatur's own zone 8a and its 269-day season. Each card opens that plant's Georgia profile. How we score.
Is it too late to plant in North Decatur?
Rarely: the season closes in stages, not all at once, and each stage has its crops. Cool-season crops can go in from around Feb 5; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 5 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 29 — long-season crops need about 90 days of runway, quick greens only 30. Here the calendar nearly circles: cool-season crops take the winter shift, and the next window is always close.
What's on the federal record near North Decatur
Closest first, within ~10 miles of North Decatur. Listing isn't leaking, and distance isn't exposure.
- EMORY UNIVERSITY-RESIDENTIAL SERUnderground Storage Tanks · 0.7 mi
- SOUTHERN LINCOLN MERCURYUnderground Storage Tanks · 0.7 mi
- QUIKTRIP #741Underground Storage Tanks · 0.7 mi
- DECATUR CHRYSLER PLYMOUTH/FORMERUnderground Storage Tanks · 0.7 mi
- ANIL INVESTMENTS LLCUnderground Storage Tanks · 0.7 mi
- NATIONWIDE MUFFFLER/MANNING TIREUnderground Storage Tanks · 0.8 mi
- MR PRIDE CARWSAHUnderground Storage Tanks · 0.8 mi
- DEKALB CO/FIRE STATION #9Underground Storage Tanks · 0.8 mi
- MEINEKE MUFFLERUnderground Storage Tanks · 0.8 mi
- BANNER FORDUnderground Storage Tanks · 0.8 mi
- EXXON FOOD STOREUnderground Storage Tanks · 0.8 mi
- DECATUR NEWS PUBLISHING COUnderground Storage Tanks · 0.8 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from North Decatur'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 North Decatur.
Total Sites
3,151
within ~10 miles of North Decatur
Risk Level
Elevated
Highest-severity
69 Superfund sites
Sources Checked
within ~10 miles of North Decatur
Severity Distribution
within ~10 miles of North Decatur
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around North Decatur, two things run higher than the national average within ~10 miles of North Decatur — Superfund (69 sites) and Underground Storage Tanks (2,286 sites). Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
Superfund: Superfund sites represent the most severe contamination in the federal system.
Underground Storage Tanks: Underground storage tanks are the single most common source of soil contamination near homes and gardens.
Commission professional soil testing before any food production (test for heavy metals, VOCs, and SVOCs).
Use raised beds with imported soil — this eliminates the primary soil-contact pathway.
Check your specific parcel in North Decatur
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 North Decatur average
Your land is one point inside North Decatur
Everything above resolves to North Decatur as a whole — one PHZM band, read across 3K acres, with hard-freeze dates borrowed from DeKalb County’s record because no 30-year normal resolves at this town’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 town 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 North Decatur Average
North Decatur Average
- ●USDA Zones 8a, averaged across North Decatur
- ●One soil character for all of North Decatur
- ●Frost dates read at North Decatur's scale: Mar 5 to Nov 29
YOUR Parcel
- ✓Your exact zone, not North Decatur's 8a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in North Decatur
Pull a site-specific report for your exact address in North Decatur, Georgia — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that North Decatur averages can't show:
We read public map data around North Decatur — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the North Decatur average
How we know this about North Decatur
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at this town’s own centroid; hard-freeze dates from NOAA 1991–2020 28°F normals at DeKalb 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 town grain anywhere on this page — there is no town-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 North Decatur
When does frost risk typically end in North Decatur?
The last hard freeze (28°F) in North Decatur typically lands around Mar 5, 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 Mar 26.
When is the first frost in North Decatur?
The first hard freeze (28°F) in North Decatur typically arrives around Nov 29, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 15, so the watching starts about Oct 30 — about 269 days after the spring freeze cleared.
How long is the growing season in North Decatur?
Measured between 28°F hard freezes, North Decatur sees about 269 frost-free days — roughly Mar 5 through Nov 29, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Mar 26 to Nov 15, about 234 days.
Is the soil safe to grow vegetables in North Decatur?
The federal record around North Decatur is a meaningful one — 3,151 documented sites, mostly Underground Storage Tanks entries (2,286), the nearest Underground Storage Tanks record about 0.7 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 North Decatur?
From about Oct 30 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 29 (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 29. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at North Decatur's scale — its 8a band and its 269-day season. Your yard writes its own version of North Decatur'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 North Decatur’s own scale
5 of the readings below were taken at North Decatur's own scale — the 3,143 acres it covers and 3,151 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- North Decatur's own USDA hardiness band, zones 8aUSDA PHZM 2023
- 3,151 documented contamination sites on the federal record near North Decatur, the closest Underground Storage Tanks record about 0.7 miles out from the town centreFederal environmental registers
- North Decatur's boundary and the 3,143 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8a and a ~269-day seasonGrowable Ground crop-matching engine
- The ecoregion at North Decatur's own centroid, the PiedmontUS EPA Level III Ecoregions
Inherited from a wider read
- The 28°F hard-freeze dates — North Decatur has no normal of its own, so its county's is the closest measured readfrom DeKalb County
- Soil character — no town-scale survey exists, so North Decatur's 3,143 acres read through its county's SSURGO summaryfrom DeKalb County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom DeKalb 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 DeKalb County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among North Decatur's 3,143 acreswhy one lot differs from the next →
- Which side of North Decatur you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 3,143 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.7 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 North Decatur-wide figureread your own land →
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