Ozan, Arkansas, sits in USDA hardiness zone 8a — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
A short list that earns its place here — cabbage, fig, california poppy, and collard greens — with any one site's soil, sun, and drainage making the final cut.
Even in Ozan, 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 Ozan 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 Ozan — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Ozan — the short answer
Ozan, Arkansas: USDA zone 8a, about 264 days between hard freezes, across 209 acres of town.
- USDA zone
- 8a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 1
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 20
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~264
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 209 acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. Hard-freeze dates are this town’s own 28°F normals: light frosts run a few weeks past them, and tender transplants usually wait 2–3 weeks after the last hard freeze.
Hardiness Zone Range
Zone 8a is Ozan's average, not your lot's — a low corner or a tree line moves it. Against Ozan's 264-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Ozan
Each reading below is measured for Ozan itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredOzan runs about 264 days between hard freezes — 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
MeasuredOzan 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 Ozan is in
Ozan sits in the South Central Plains — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Ozan's own centroid rather than borrowed from Hempstead County.
What Grows in Ozan
Every plant below cleared Ozan's own zone 8a and its 264-day season. Each card opens that plant's Arkansas profile. How we score.
Is it too late to plant in Ozan?
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 1; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 1 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 20 — 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 Ozan
Closest first, within ~10 miles of Ozan. Listing isn't leaking, and distance isn't exposure.
- 10S25W30CCC1Nitrate · 150 ft
- BOB'S GROCERYUnderground Storage Tanks · 650 ft
- OZAN GROCERY AND STATIONUnderground Storage Tanks · 650 ft
- 10S26W25DAD1Nitrate · 1800 ft
- 10S26W24ABC1Nitrate · 1.8 mi
- 11S25W08BAC1Nitrate · 2.3 mi
- 10S25W22BBB1Nitrate · 3.5 mi
- 10S26W15BBA1Nitrate · 4.1 mi
- WASHINGTON WATER SYSTEMPFAS · 4.6 mi
- 11S26W23BBB1Nitrate · 4.8 mi
- 10S25W23ACD1Nitrate · 4.8 mi
- PIONEER GROCERYUnderground Storage Tanks · 5.4 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Ozan'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 Ozan.
Total Sites
183
within ~10 miles of Ozan
Risk Level
Elevated
Highest-severity
2 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Ozan
Severity Distribution
within ~10 miles of Ozan
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Ozan, two things run higher than the national average within ~10 miles of Ozan — Nitrate (96 sites) and Toxics Release Inventory (13 sites). That's not a problem with your land — it's information about it.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Check your specific parcel in Ozan
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 Ozan average
Your land is one point inside Ozan
Everything above resolves to Ozan as a whole — one PHZM band and one 28°F frost record, read across 209 acres. 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 Ozan Average
Ozan Average
- ●USDA Zones 8a, averaged across Ozan
- ●One soil character for all of Ozan
- ●Frost dates read at Ozan's scale: Mar 1 to Nov 20
YOUR Parcel
- ✓Your exact zone, not Ozan's 8a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Ozan
Pull a site-specific report for your exact address in Ozan, Arkansas — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Ozan averages can't show:
We read public map data around Ozan — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Ozan average
How we know this about Ozan
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 Ozan’s own record; 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 Ozan
When does frost risk typically end in Ozan?
The last hard freeze (28°F) in Ozan typically lands around Mar 1, 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 22.
When is the first frost in Ozan?
The first hard freeze (28°F) in Ozan typically arrives around Nov 20, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 6, so the watching starts about Oct 21 — about 264 days after the spring freeze cleared.
How long is the growing season in Ozan?
Measured between 28°F hard freezes, Ozan sees about 264 frost-free days — roughly Mar 1 through Nov 20, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Mar 22 to Nov 6, about 229 days.
Is the soil safe to grow vegetables in Ozan?
The federal record around Ozan is a meaningful one — 183 documented sites, mostly Nitrate entries (96), the nearest Nitrate record under a tenth of a mile 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 Ozan?
From about Oct 21 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 20 (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 20. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Ozan's scale — its 8a band and its 264-day season. Your yard writes its own version of Ozan'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 Ozan’s own scale
6 of the readings below were taken at Ozan's own scale — its own ~264-day season between 28°F freezes, the 209 acres it covers and 183 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Ozan's own USDA hardiness band, zones 8aUSDA PHZM 2023
- Ozan's own 28°F hard-freeze dates, about Mar 1 and Nov 20 and the ~264-day span between themNOAA 1991–2020 Climate Normals
- 183 documented contamination sites on the federal record near Ozan, the closest Nitrate record under a tenth of a mile out from the town centreFederal environmental registers
- Ozan's boundary and the 209 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8a and a ~264-day seasonGrowable Ground crop-matching engine
- The ecoregion at Ozan's own centroid, the South Central PlainsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Ozan's 209 acres read through its county's SSURGO summaryfrom Hempstead County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Hempstead County
- The growing challenges every Arkansas grower plans around — written at state scale, so they stay on the state guidefrom Arkansas
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Hempstead County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Ozan's 209 acreswhy one lot differs from the next →
- Which side of Ozan you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 209 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Nitrate record under a tenth of a mile 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 Ozan-wide figureread your own land →