South Coffeyville, Oklahoma, sits in USDA hardiness zone 7a — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
On paper, cabbage, hazelnut, california poppy, and collard greens all suit these conditions — on the ground, soil, sun, and drainage make the final call.
Even in South Coffeyville, 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 South Coffeyville 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 South Coffeyville — soil, climate, flood, and parcel records. How we handle your address.
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South Coffeyville — the short answer
South Coffeyville, Oklahoma: USDA zone 7a, about 229 days between hard freezes, across 472 acres of town.
- USDA zone
- 7a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 26
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 10
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~229
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 472 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 7a is South Coffeyville's average, not your lot's — a low corner or a tree line moves it. Against South Coffeyville's 229-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in South Coffeyville
Each reading below is measured for South Coffeyville itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredSouth Coffeyville runs about 229 days between hard freezes — 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
MeasuredSouth Coffeyville sits in USDA hardiness zone 7a.
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 South Coffeyville is in
South Coffeyville sits in the Central Irregular Plains — EPA Level III, inside the wider Great Plains. That is read at South Coffeyville's own centroid rather than borrowed from Nowata County.
What Grows in South Coffeyville
Every plant below cleared South Coffeyville's own zone 7a and its 229-day season. Each card opens that plant's Oklahoma profile. How we score.
Is it too late to plant in South Coffeyville?
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 26; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 26 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 10 — long-season crops need about 90 days of runway, quick greens only 30. A long window like this one runs successions deep into fall — and even its last weeks take quick greens and garlic.
What's on the federal record near South Coffeyville
Closest first, within ~10 miles of South Coffeyville. Listing isn't leaking, and distance isn't exposure.
- Southland GroceryUnderground Storage Tanks · 1900 ft
- STARPIPE USA DBA SP FOUNDRY / SP FOUNDRYToxics Release Inventory · 2300 ft
- STARPIPE USA DBA SP FOUNDRY / SP FOUNDRYBrownfields · 2300 ft
- The Woodshed IIUnderground Storage Tanks · 2300 ft
- South Coffeyville SchoolUnderground Storage Tanks · 0.6 mi
- CONOCO TRUCK STOPUnderground Storage Tanks · 1.4 mi
- RILEYS TRACTOR/TRAILER RPR INCBrownfields · 1.5 mi
- BORDERTOWN - IIUnderground Storage Tanks · 1.5 mi
- BILL CROW VOLKSWAGONUnderground Storage Tanks · 1.6 mi
- OSAGE AND WALNUTSuperfund · 1.6 mi
- COFFEYVILLE RE-CON INC.Toxics Release Inventory · 1.7 mi
- WILSON SALES & SERVICEUnderground Storage Tanks · 1.8 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from South Coffeyville'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 South Coffeyville.
Total Sites
165
within ~10 miles of South Coffeyville
Risk Level
Elevated
Highest-severity
2 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of South Coffeyville
Severity Distribution
within ~10 miles of South Coffeyville
A note from Gnorman
What an experienced grower watches for around here
In and around South Coffeyville, Toxics Release Inventory runs higher than the national average — 13 sites within ~10 miles of South Coffeyville. 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.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Check your specific parcel in South Coffeyville
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 South Coffeyville average
Your land is one point inside South Coffeyville
Everything above resolves to South Coffeyville as a whole — one PHZM band and one 28°F frost record, read across 472 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 South Coffeyville Average
South Coffeyville Average
- ●USDA Zones 7a, averaged across South Coffeyville
- ●One soil character for all of South Coffeyville
- ●Frost dates read at South Coffeyville's scale: Mar 26 to Nov 10
YOUR Parcel
- ✓Your exact zone, not South Coffeyville's 7a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in South Coffeyville
Pull a site-specific report for your exact address in South Coffeyville, Oklahoma — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that South Coffeyville averages can't show:
We read public map data around South Coffeyville — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the South Coffeyville average
How we know this about South Coffeyville
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 South Coffeyville’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 South Coffeyville
When does frost risk typically end in South Coffeyville?
The last hard freeze (28°F) in South Coffeyville typically lands around Mar 26, 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 16.
When is the first frost in South Coffeyville?
The first hard freeze (28°F) in South Coffeyville typically arrives around Nov 10, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 27, so the watching starts about Oct 11 — about 229 days after the spring freeze cleared.
How long is the growing season in South Coffeyville?
Measured between 28°F hard freezes, South Coffeyville sees about 229 frost-free days — roughly Mar 26 through Nov 10, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 16 to Oct 27, about 194 days.
Is the soil safe to grow vegetables in South Coffeyville?
The federal record around South Coffeyville is a meaningful one — 165 documented sites, mostly Underground Storage Tanks entries (68), the nearest Underground Storage Tanks 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 South Coffeyville?
From about Oct 11 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 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 Nov 10. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at South Coffeyville's scale — its 7a band and its 229-day season. Your yard writes its own version of South Coffeyville'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 South Coffeyville’s own scale
6 of the readings below were taken at South Coffeyville's own scale — its own ~229-day season between 28°F freezes, the 472 acres it covers and 165 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- South Coffeyville's own USDA hardiness band, zones 7aUSDA PHZM 2023
- South Coffeyville's own 28°F hard-freeze dates, about Mar 26 and Nov 10 and the ~229-day span between themNOAA 1991–2020 Climate Normals
- 165 documented contamination sites on the federal record near South Coffeyville, the closest Underground Storage Tanks record about 0.4 miles out from the town centreFederal environmental registers
- South Coffeyville's boundary and the 472 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7a and a ~229-day seasonGrowable Ground crop-matching engine
- The ecoregion at South Coffeyville's own centroid, the Central Irregular PlainsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so South Coffeyville's 472 acres read through its county's SSURGO summaryfrom Nowata County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Nowata County
- The growing challenges every Oklahoma grower plans around — written at state scale, so they stay on the state guidefrom Oklahoma
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Nowata County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among South Coffeyville's 472 acreswhy one lot differs from the next →
- Which side of South Coffeyville you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 472 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks 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 South Coffeyville-wide figureread your own land →
More in Oklahoma
Wider growing context
What grows across OklahomaSouth Coffeyville sits outside our named growing regions, so Oklahoma as a whole is its closest context here.