D'Iberville, 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.
These conditions suit artichoke, fig, california poppy, and cabbage — a starting list any specific site will trim or extend with its own soil, sun, and drainage.
Even in D'Iberville, 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 D'Iberville 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 D'Iberville — soil, climate, flood, and parcel records. How we handle your address.
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D'Iberville — the short answer
D'Iberville, Mississippi: USDA zone 9a, about 309 days between hard freezes, across 7K acres of city.
- USDA zone
- 9a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Feb 4
- Harrison County normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Dec 10
- Harrison County normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~309
- Harrison County normal — NOAA 1991–2020, nearest to this town
- City area
- 7K 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 Harrison County’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 9a is D'Iberville's average, not your lot's — a low corner or a tree line moves it. Against D'Iberville's 309-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in D'Iberville
Each reading below is measured for D'Iberville itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsD'Iberville runs about 309 days between hard freezes (read from Harrison County, the closest normal to D'Iberville) — 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
MeasuredD'Iberville 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 D'Iberville is in
D'Iberville sits in the Southern Coastal Plain — EPA Level III, inside the wider Eastern Temperate Forests. That is read at D'Iberville's own centroid, and it is not what its county reads: Harrison County is mostly Southeastern Plains. The wider page above you is answering a different question about different ground.
What Grows in D'Iberville
Every plant below cleared D'Iberville's own zone 9a and its 309-day season. Each card opens that plant's Mississippi profile. How we score.
Is it too late to plant in D'Iberville?
For most of the year, no — what changes is which crops still fit the days remaining. Cool-season crops can go in from around Jan 7; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Feb 4 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 10 — long-season crops need about 90 days of runway, quick greens only 30. And with a calendar this mild, the honest answer is that planting barely stops — winter opens seasons colder regions never see.
What's on the federal record near D'Iberville
Closest first, within ~10 miles of D'Iberville. Listing isn't leaking, and distance isn't exposure.
- DIBERVILLE W/SPFAS · 650 ft
- GOODYEAR AUTO SERVICE CENTERBrownfields · 1300 ft
- Bayside Shell StationUnderground Storage Tanks · 1400 ft
- WINN DIXIE STORE #1513Brownfields · 1400 ft
- MANDAL PONTIAC BUICK GMC, INC.Brownfields · 1400 ft
- Formerly Coastal EnergyUnderground Storage Tanks · 1600 ft
- St Martin Jr High SchoolUnderground Storage Tanks · 1700 ft
- Glen C Reid VacantUnderground Storage Tanks · 1700 ft
- Keith's # 94Underground Storage Tanks · 1700 ft
- D AND F AUTOMOTIVEBrownfields · 1700 ft
- Clyde EvansUnderground Storage Tanks · 1800 ft
- Auto Mall ShellUnderground Storage Tanks · 1900 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from D'Iberville'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 D'Iberville.
Total Sites
697
within ~10 miles of D'Iberville
Risk Level
Elevated
Highest-severity
7 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of D'Iberville
Severity Distribution
within ~10 miles of D'Iberville
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around D'Iberville, Nitrate runs higher than the national average — 186 sites within ~10 miles of D'Iberville. Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in D'Iberville
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 D'Iberville average
Your land is one point inside D'Iberville
Everything above resolves to D'Iberville as a whole — one PHZM band, read across 7K acres, with hard-freeze dates borrowed from Harrison 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 D'Iberville Average
D'Iberville Average
- ●USDA Zones 9a, averaged across D'Iberville
- ●One soil character for all of D'Iberville
- ●Frost dates read at D'Iberville's scale: Feb 4 to Dec 10
YOUR Parcel
- ✓Your exact zone, not D'Iberville's 9a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in D'Iberville
Pull a site-specific report for your exact address in D'Iberville, Mississippi — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that D'Iberville averages can't show:
We read public map data around D'Iberville — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the D'Iberville average
How we know this about D'Iberville
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 Harrison 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 D'Iberville
When does frost risk typically end in D'Iberville?
The last hard freeze (28°F) in D'Iberville typically lands around Feb 4, 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 Feb 25.
When is the first frost in D'Iberville?
The first hard freeze (28°F) in D'Iberville typically arrives around Dec 10, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 26, so the watching starts about Nov 10 — about 309 days after the spring freeze cleared.
How long is the growing season in D'Iberville?
Measured between 28°F hard freezes, D'Iberville sees about 309 frost-free days — roughly Feb 4 through Dec 10, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Feb 25 to Nov 26, about 274 days.
Is the soil safe to grow vegetables in D'Iberville?
The federal record around D'Iberville is a meaningful one — 697 documented sites, mostly Underground Storage Tanks entries (272), the nearest PFAS record about 0.1 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 D'Iberville?
From about Nov 10 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 10 (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 10. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at D'Iberville's scale — its 9a band and its 309-day season. Your yard writes its own version of D'Iberville'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 D'Iberville’s own scale
5 of the readings below were taken at D'Iberville's own scale — the 6,760 acres it covers and 697 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- D'Iberville's own USDA hardiness band, zones 9aUSDA PHZM 2023
- 697 documented contamination sites on the federal record near D'Iberville, the closest PFAS record about 0.1 miles out from the town centreFederal environmental registers
- D'Iberville's boundary and the 6,760 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 9a and a ~309-day seasonGrowable Ground crop-matching engine
- D'Iberville sits in the Southern Coastal Plain — not the ecoregion its county mostly readsUS EPA Level III Ecoregions
Inherited from a wider read
- The 28°F hard-freeze dates — D'Iberville has no normal of its own, so its county's is the closest measured readfrom Harrison County
- Soil character — no town-scale survey exists, so D'Iberville's 6,760 acres read through its county's SSURGO summaryfrom Harrison County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Harrison 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 Harrison County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among D'Iberville's 6,760 acreswhy one lot differs from the next →
- Which side of D'Iberville you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 6,760 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest PFAS record about 0.1 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 D'Iberville-wide figureread your own land →
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