Lilburn, 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.
Reliable performers under these conditions include cabbage, fig, california poppy, and collard greens; what your own ground favors still comes down to its soil, sun, and drainage.
Even in Lilburn, 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 Lilburn 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 Lilburn — soil, climate, flood, and parcel records. How we handle your address.
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Lilburn — the short answer
Lilburn, Georgia: USDA zone 8a, about 265 days between hard freezes, across 4K acres of city.
- USDA zone
- 8a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 9
- Gwinnett County normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Nov 29
- Gwinnett County normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~265
- Gwinnett County normal — NOAA 1991–2020, nearest to this town
- City area
- 4K 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 Gwinnett County’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 8a is Lilburn's average, not your lot's — a low corner or a tree line moves it. Against Lilburn's 265-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Lilburn
Each reading below is measured for Lilburn itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsLilburn runs about 265 days between hard freezes (read from Gwinnett County, the closest normal to Lilburn) — 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
MeasuredLilburn 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 Lilburn is in
Lilburn sits in the Piedmont — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Lilburn's own centroid rather than borrowed from Gwinnett County.
What Grows in Lilburn
Every plant below cleared Lilburn's own zone 8a and its 265-day season. Each card opens that plant's Georgia profile. How we score.
Is it too late to plant in Lilburn?
For most of the year, no — what changes is which crops still fit the days remaining. Cool-season crops can go in from around Feb 9; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 9 (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. With almost year-round growing weather, timing is about heat and rainfall more than frost — some bench is always in play.
What's on the federal record near Lilburn
Closest first, within ~10 miles of Lilburn. Listing isn't leaking, and distance isn't exposure.
- BST/LILBURN CO/F5501Underground Storage Tanks · 1600 ft
- FORMER SERVICE STATIONUnderground Storage Tanks · 1700 ft
- CSX LILBURN DERAILMENTSuperfund · 1800 ft
- KENERLY SERVICE STATIONUnderground Storage Tanks · 1800 ft
- LILBURN POLICE DEPTUnderground Storage Tanks · 1800 ft
- LILBURN TIRE & AUTO SERVICEBrownfields · 1800 ft
- BRISTOW & ASSOCUnderground Storage Tanks · 2000 ft
- COLES SERVICE STATIONUnderground Storage Tanks · 2000 ft
- TEXACO FOOD MART DBA JS REAL ESTATE HOLDINGSUnderground Storage Tanks · 2100 ft
- SHELL LILBURN FOODUnderground Storage Tanks · 2300 ft
- AMOCO STATION #7008Underground Storage Tanks · 2300 ft
- ALLIED READYMIX INC-PLANT #76Underground Storage Tanks · 0.5 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Lilburn'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 Lilburn.
Total Sites
1,855
within ~10 miles of Lilburn
Risk Level
Elevated
Highest-severity
19 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Lilburn
Severity Distribution
within ~10 miles of Lilburn
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Lilburn, two things run higher than the national average within ~10 miles of Lilburn — Toxics Release Inventory (152 sites) and Underground Storage Tanks (1,206 sites). It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.
Underground Storage Tanks: Underground storage tanks are the single most common source of soil contamination near homes and gardens.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Use raised beds with imported soil — this eliminates the primary soil-contact pathway.
Check your specific parcel in Lilburn
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 Lilburn average
Your land is one point inside Lilburn
Everything above resolves to Lilburn as a whole — one PHZM band, read across 4K acres, with hard-freeze dates borrowed from Gwinnett 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 Lilburn Average
Lilburn Average
- ●USDA Zones 8a, averaged across Lilburn
- ●One soil character for all of Lilburn
- ●Frost dates read at Lilburn's scale: Mar 9 to Nov 29
YOUR Parcel
- ✓Your exact zone, not Lilburn's 8a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Lilburn
Pull a site-specific report for your exact address in Lilburn, Georgia — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Lilburn averages can't show:
We read public map data around Lilburn — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Lilburn average
How we know this about Lilburn
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 Gwinnett 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 Lilburn
When does frost risk typically end in Lilburn?
The last hard freeze (28°F) in Lilburn typically lands around Mar 9, 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 30.
When is the first frost in Lilburn?
The first hard freeze (28°F) in Lilburn 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 265 days after the spring freeze cleared.
How long is the growing season in Lilburn?
Measured between 28°F hard freezes, Lilburn sees about 265 frost-free days — roughly Mar 9 through Nov 29, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Mar 30 to Nov 15, about 230 days.
Is the soil safe to grow vegetables in Lilburn?
The federal record around Lilburn is a meaningful one — 1,855 documented sites, mostly Underground Storage Tanks entries (1,206), the nearest Underground Storage Tanks record about 0.3 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 Lilburn?
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 Lilburn's scale — its 8a band and its 265-day season. Your yard writes its own version of Lilburn'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 Lilburn’s own scale
5 of the readings below were taken at Lilburn's own scale — the 4,319 acres it covers and 1,855 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- Lilburn's own USDA hardiness band, zones 8aUSDA PHZM 2023
- 1,855 documented contamination sites on the federal record near Lilburn, the closest Underground Storage Tanks record about 0.3 miles out from the town centreFederal environmental registers
- Lilburn's boundary and the 4,319 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8a and a ~265-day seasonGrowable Ground crop-matching engine
- The ecoregion at Lilburn's own centroid, the PiedmontUS EPA Level III Ecoregions
Inherited from a wider read
- The 28°F hard-freeze dates — Lilburn has no normal of its own, so its county's is the closest measured readfrom Gwinnett County
- Soil character — no town-scale survey exists, so Lilburn's 4,319 acres read through its county's SSURGO summaryfrom Gwinnett County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Gwinnett 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 Gwinnett County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Lilburn's 4,319 acreswhy one lot differs from the next →
- Which side of Lilburn you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 4,319 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.3 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 Lilburn-wide figureread your own land →
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