Ponca City, 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.
A short list that earns its place here — cabbage, hazelnut, california poppy, and collard greens — with any one site's soil, sun, and drainage making the final cut.
Even in Ponca City, 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 Ponca City 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 Ponca City — soil, climate, flood, and parcel records. How we handle your address.
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Ponca City — the short answer
Ponca City, Oklahoma: USDA zone 7a, about 228 days between hard freezes, across 12K acres of city.
- USDA zone
- 7a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 27
- 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
- ~228
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 12K 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 Ponca City's average, not your lot's — a low corner or a tree line moves it. Against Ponca City's 228-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Ponca City
Each reading below is measured for Ponca City itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredPonca City runs about 228 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
MeasuredPonca City 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 Ponca City is in
Ponca City sits in the Central Great Plains — EPA Level III, inside the wider Great Plains. That is read at Ponca City's own centroid rather than borrowed from Kay County.
What Grows in Ponca City
Every plant below cleared Ponca City's own zone 7a and its 228-day season. Each card opens that plant's Oklahoma profile. How we score.
Is it too late to plant in Ponca City?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Feb 27; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 27 (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. With a season this long, “too late” mostly means “switch crops” — second sowings and a full fall garden are the norm, with garlic closing the year.
What's on the federal record near Ponca City
Closest first, within ~10 miles of Ponca City. Listing isn't leaking, and distance isn't exposure.
- Pioneer Wholesale Liquor DistUnderground Storage Tanks · 1300 ft
- Conoco Station #228Underground Storage Tanks · 1400 ft
- AllianceHealth Ponca CityUnderground Storage Tanks · 1400 ft
- KAY COUNTY OKLA HOSPITAL CO LLC DBA ALLIANCEHEALTH PONCA CITYBrownfields · 1600 ft
- Conoco Service StationUnderground Storage Tanks · 1900 ft
- Rawdon DxUnderground Storage Tanks · 2300 ft
- James Helton GulfUnderground Storage Tanks · 2300 ft
- Car Wash CenterUnderground Storage Tanks · 0.5 mi
- First National Bank Of OklahomaUnderground Storage Tanks · 0.6 mi
- Casey's General Store #3681Underground Storage Tanks · 0.6 mi
- Extra StopUnderground Storage Tanks · 0.7 mi
- Sonny's HilltopUnderground Storage Tanks · 0.7 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Ponca City'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 Ponca City.
Total Sites
231
within ~10 miles of Ponca City
Risk Level
Elevated
Highest-severity
3 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Ponca City
Severity Distribution
within ~10 miles of Ponca City
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Ponca City, two things run higher than the national average within ~10 miles of Ponca City — Underground Storage Tanks (157 sites) and Superfund (3 sites). Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
Underground Storage Tanks: Underground storage tanks are the single most common source of soil contamination near homes and gardens.
Superfund: Superfund sites represent the most severe contamination in the federal system.
Use raised beds with imported soil — this eliminates the primary soil-contact pathway.
Commission professional soil testing before any food production (test for heavy metals, VOCs, and SVOCs).
Check your specific parcel in Ponca City
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 Ponca City average
Your land is one point inside Ponca City
Everything above resolves to Ponca City as a whole — one PHZM band and one 28°F frost record, read across 12K 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 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 Ponca City Average
Ponca City Average
- ●USDA Zones 7a, averaged across Ponca City
- ●One soil character for all of Ponca City
- ●Frost dates read at Ponca City's scale: Mar 27 to Nov 10
YOUR Parcel
- ✓Your exact zone, not Ponca City's 7a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Ponca City
Pull a site-specific report for your exact address in Ponca City, Oklahoma — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Ponca City averages can't show:
We read public map data around Ponca City — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Ponca City average
How we know this about Ponca City
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 Ponca City’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 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 Ponca City
When does frost risk typically end in Ponca City?
The last hard freeze (28°F) in Ponca City typically lands around Mar 27, 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 17.
When is the first frost in Ponca City?
The first hard freeze (28°F) in Ponca City 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 228 days after the spring freeze cleared.
How long is the growing season in Ponca City?
Measured between 28°F hard freezes, Ponca City sees about 228 frost-free days — roughly Mar 27 through Nov 10, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 17 to Oct 27, about 193 days.
Is the soil safe to grow vegetables in Ponca City?
The federal record around Ponca City is a meaningful one — 231 documented sites, mostly Underground Storage Tanks entries (157), the nearest Underground Storage Tanks record about 0.2 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 Ponca City?
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 Ponca City's scale — its 7a band and its 228-day season. Your yard writes its own version of Ponca City'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 Ponca City’s own scale
6 of the readings below were taken at Ponca City's own scale — its own ~228-day season between 28°F freezes, the 11,761 acres it covers and 231 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Ponca City's own USDA hardiness band, zones 7aUSDA PHZM 2023
- Ponca City's own 28°F hard-freeze dates, about Mar 27 and Nov 10 and the ~228-day span between themNOAA 1991–2020 Climate Normals
- 231 documented contamination sites on the federal record near Ponca City, the closest Underground Storage Tanks record about 0.2 miles out from the town centreFederal environmental registers
- Ponca City's boundary and the 11,761 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7a and a ~228-day seasonGrowable Ground crop-matching engine
- The ecoregion at Ponca City's own centroid, the Central Great PlainsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Ponca City's 11,761 acres read through its county's SSURGO summaryfrom Kay County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Kay 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 Kay County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Ponca City's 11,761 acreswhy one lot differs from the next →
- Which side of Ponca City you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 11,761 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.2 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 Ponca City-wide figureread your own land →
More in Oklahoma
Wider growing context
What grows across OklahomaPonca City sits outside our named growing regions, so Oklahoma as a whole is its closest context here.
Nearby growing guides