Okolona, Mississippi, 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 Okolona, 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 Okolona 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 Okolona — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Okolona — the short answer
Okolona, Mississippi: USDA zone 8a, about 245 days between hard freezes, across 5K acres of city.
- USDA zone
- 8a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 13
- Chickasaw County normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Nov 13
- Chickasaw County normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~245
- Chickasaw County normal — NOAA 1991–2020, nearest to this town
- City area
- 5K 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 Chickasaw County’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 8a is Okolona's average, not your lot's — a low corner or a tree line moves it. Against Okolona's 245-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Okolona
Each reading below is measured for Okolona itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsOkolona runs about 245 days between hard freezes (read from Chickasaw County, the closest normal to Okolona) — 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
MeasuredOkolona 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 Okolona is in
Okolona sits in the Southeastern Plains — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Okolona's own centroid rather than borrowed from Chickasaw County.
What Grows in Okolona
Every plant below cleared Okolona's own zone 8a and its 245-day season. Each card opens that plant's Mississippi profile. How we score.
Is it too late to plant in Okolona?
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 13; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 13 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 13 — long-season crops need about 90 days of runway, quick greens only 30. There is slack in a calendar like this — late plantings, second rounds of favorites, and a fall bench that keeps beds working.
What's on the federal record near Okolona
Closest first, within ~10 miles of Okolona. Listing isn't leaking, and distance isn't exposure.
- Okolona Police & Fire DepartmentUnderground Storage Tanks · 750 ft
- Depot GroceryUnderground Storage Tanks · 900 ft
- 017D0005 CHICKASAWNitrate · 1000 ft
- 017D0014 CHICKASAWNitrate · 1400 ft
- ROSE HILL COMPANY INCBrownfields · 1500 ft
- ROSE HILL COMPANY INCToxics Release Inventory · 1500 ft
- Fast Jack'sUnderground Storage Tanks · 1700 ft
- Okolona Service StationUnderground Storage Tanks · 2200 ft
- Carter Davis GulfUnderground Storage Tanks · 2300 ft
- Dairy LandUnderground Storage Tanks · 2400 ft
- ASTRO AUTO WORLD INCBrownfields · 2400 ft
- Okolona Municipal School DistrictUnderground Storage Tanks · 2500 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Okolona'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 Okolona.
Total Sites
85
within ~10 miles of Okolona
Risk Level
Elevated
Highest-severity
1 Superfund site (none NPL-listed)
Sources Checked
within ~10 miles of Okolona
Severity Distribution
within ~10 miles of Okolona
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Okolona, two things run higher than the national average within ~10 miles of Okolona — Underground Storage Tanks (53 sites) and Nitrate (22 sites). It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
Underground Storage Tanks: Underground storage tanks are the single most common source of soil contamination near homes and gardens.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Use raised beds with imported soil — this eliminates the primary soil-contact pathway.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in Okolona
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 Okolona average
Your land is one point inside Okolona
Everything above resolves to Okolona as a whole — one PHZM band, read across 5K acres, with hard-freeze dates borrowed from Chickasaw 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 Okolona Average
Okolona Average
- ●USDA Zones 8a, averaged across Okolona
- ●One soil character for all of Okolona
- ●Frost dates read at Okolona's scale: Mar 13 to Nov 13
YOUR Parcel
- ✓Your exact zone, not Okolona's 8a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Okolona
Pull a site-specific report for your exact address in Okolona, Mississippi — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Okolona averages can't show:
We read public map data around Okolona — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Okolona average
How we know this about Okolona
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 Chickasaw 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 Okolona
When does frost risk typically end in Okolona?
The last hard freeze (28°F) in Okolona typically lands around Mar 13, 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 3.
When is the first frost in Okolona?
The first hard freeze (28°F) in Okolona typically arrives around Nov 13, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 30, so the watching starts about Oct 14 — about 245 days after the spring freeze cleared.
How long is the growing season in Okolona?
Measured between 28°F hard freezes, Okolona sees about 245 frost-free days — roughly Mar 13 through Nov 13, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 3 to Oct 30, about 210 days.
Is the soil safe to grow vegetables in Okolona?
The federal record around Okolona is a meaningful one — 85 documented sites, mostly Underground Storage Tanks entries (53), the nearest Underground Storage Tanks 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 Okolona?
From about Oct 14 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 13 (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 13. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Okolona's scale — its 8a band and its 245-day season. Your yard writes its own version of Okolona'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 Okolona’s own scale
5 of the readings below were taken at Okolona's own scale — the 4,593 acres it covers and 85 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- Okolona's own USDA hardiness band, zones 8aUSDA PHZM 2023
- 85 documented contamination sites on the federal record near Okolona, the closest Underground Storage Tanks record about 0.1 miles out from the town centreFederal environmental registers
- Okolona's boundary and the 4,593 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8a and a ~245-day seasonGrowable Ground crop-matching engine
- The ecoregion at Okolona's own centroid, the Southeastern PlainsUS EPA Level III Ecoregions
Inherited from a wider read
- The 28°F hard-freeze dates — Okolona has no normal of its own, so its county's is the closest measured readfrom Chickasaw County
- Soil character — no town-scale survey exists, so Okolona's 4,593 acres read through its county's SSURGO summaryfrom Chickasaw County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Chickasaw 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 Chickasaw County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Okolona's 4,593 acreswhy one lot differs from the next →
- Which side of Okolona you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 4,593 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks 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 Okolona-wide figureread your own land →
More in Mississippi
Growing region
Nearby growing guides