Kiln, Mississippi, sits in USDA hardiness zone 9a — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
Crops well matched to these conditions include artichoke, fig, california poppy, and cabbage — though what thrives on any one site still turns on its specific soil, sun, and drainage.
Even in Kiln, 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 Kiln 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 Kiln — soil, climate, flood, and parcel records. How we handle your address.
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Kiln — the short answer
Kiln, Mississippi: USDA zone 9a, about 304 days between hard freezes, across 8K acres of town.
- USDA zone
- 9a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Feb 8
- Hancock County normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Dec 9
- Hancock County normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~304
- Hancock County normal — NOAA 1991–2020, nearest to this town
- Town area
- 8K 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 Hancock County’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 9a is Kiln's average, not your lot's — a low corner or a tree line moves it. Against Kiln's 304-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Kiln
Each reading below is measured for Kiln itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsKiln runs about 304 days between hard freezes (read from Hancock County, the closest normal to Kiln) — 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
MeasuredKiln sits in USDA hardiness zone 9a.
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 Kiln is in
Kiln sits in the Southern Coastal Plain — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Kiln's own centroid rather than borrowed from Hancock County.
What Grows in Kiln
Every plant below cleared Kiln's own zone 9a and its 304-day season. Each card opens that plant's Mississippi profile. How we score.
Is it too late to plant in Kiln?
Rarely: the season closes in stages, not all at once, and each stage has its crops. Cool-season crops can go in from around Jan 11; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Feb 8 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 9 — 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 Kiln
Closest first, within ~10 miles of Kiln. Listing isn't leaking, and distance isn't exposure.
- REASONABLE AUTO REPAIRBrownfields · 1900 ft
- Old RoosterUnderground Storage Tanks · 2000 ft
- George Curet SrUnderground Storage Tanks · 0.7 mi
- Majik Market 241-22Underground Storage Tanks · 0.7 mi
- Keith's #181Underground Storage Tanks · 0.7 mi
- Kodie's JunctionUnderground Storage Tanks · 0.8 mi
- Us Corps Of EngineersUnderground Storage Tanks · 0.8 mi
- Area Maintenance Hq MshdUnderground Storage Tanks · 0.9 mi
- LONNIES AUTOMOTIVEBrownfields · 0.9 mi
- KILN AUTO BODY AND PAINT INCBrownfields · 1.0 mi
- COAST ELECTRIC POWER ASSOCIATION, COAST ELECTRIC SERVICE CENTER, HIGHWAY 603Brownfields · 1.1 mi
- Coastal Hardward & Rental CompanyUnderground Storage Tanks · 1.1 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Kiln'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 Kiln.
Total Sites
193
within ~10 miles of Kiln
Risk Level
Elevated
Highest-severity
5 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Kiln
Severity Distribution
within ~10 miles of Kiln
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Kiln, two things run higher than the national average within ~10 miles of Kiln — PFAS (4 sites) and Superfund (5 sites). Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
PFAS: PFAS (per- and polyfluoroalkyl substances) are called "forever chemicals" because they do not biodegrade.
Superfund: Superfund sites represent the most severe contamination in the federal system.
Test irrigation water source — this is the primary pathway for PFAS to reach garden crops.
Commission professional soil testing before any food production (test for heavy metals, VOCs, and SVOCs).
Check your specific parcel in Kiln
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 Kiln average
Your land is one point inside Kiln
Everything above resolves to Kiln as a whole — one PHZM band, read across 8K acres, with hard-freeze dates borrowed from Hancock 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 Kiln Average
Kiln Average
- ●USDA Zones 9a, averaged across Kiln
- ●One soil character for all of Kiln
- ●Frost dates read at Kiln's scale: Feb 8 to Dec 9
YOUR Parcel
- ✓Your exact zone, not Kiln's 9a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Kiln
Pull a site-specific report for your exact address in Kiln, Mississippi — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Kiln averages can't show:
We read public map data around Kiln — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Kiln average
How we know this about Kiln
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 Hancock 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 Kiln
When does frost risk typically end in Kiln?
The last hard freeze (28°F) in Kiln typically lands around Feb 8, 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 1.
When is the first frost in Kiln?
The first hard freeze (28°F) in Kiln typically arrives around Dec 9, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 25, so the watching starts about Nov 9 — about 304 days after the spring freeze cleared.
How long is the growing season in Kiln?
Measured between 28°F hard freezes, Kiln sees about 304 frost-free days — roughly Feb 8 through Dec 9, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Mar 1 to Nov 25, about 269 days.
Is the soil safe to grow vegetables in Kiln?
The federal record around Kiln is a meaningful one — 193 documented sites, mostly Underground Storage Tanks entries (90), the nearest Brownfields record about 0.4 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 Kiln?
From about Nov 9 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 Dec 9 (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 Dec 9. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Kiln's scale — its 9a band and its 304-day season. Your yard writes its own version of Kiln'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 Kiln’s own scale
5 of the readings below were taken at Kiln's own scale — the 8,425 acres it covers and 193 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- Kiln's own USDA hardiness band, zones 9aUSDA PHZM 2023
- 193 documented contamination sites on the federal record near Kiln, the closest Brownfields record about 0.4 miles out from the town centreFederal environmental registers
- Kiln's boundary and the 8,425 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 9a and a ~304-day seasonGrowable Ground crop-matching engine
- The ecoregion at Kiln's own centroid, the Southern Coastal PlainUS EPA Level III Ecoregions
Inherited from a wider read
- The 28°F hard-freeze dates — Kiln has no normal of its own, so its county's is the closest measured readfrom Hancock County
- Soil character — no town-scale survey exists, so Kiln's 8,425 acres read through its county's SSURGO summaryfrom Hancock County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Hancock County
- The growing challenges every Mississippi grower plans around — written at state scale, so they stay on the state guidefrom Mississippi
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Hancock County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Kiln's 8,425 acreswhy one lot differs from the next →
- Which side of Kiln you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 8,425 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields record about 0.4 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 Kiln-wide figureread your own land →
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