Kingfisher, Oklahoma, sits in USDA hardiness zone 7b — 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, prickly pear, california poppy, and collard greens — with any one site's soil, sun, and drainage making the final cut.
Even in Kingfisher, 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 Kingfisher 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 Kingfisher — soil, climate, flood, and parcel records. How we handle your address.
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Kingfisher — the short answer
Kingfisher, Oklahoma: USDA zone 7b, about 229 days between hard freezes, across 3K acres of city.
- USDA zone
- 7b
- 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 11
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~229
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 3K 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 7b is Kingfisher's average, not your lot's — a low corner or a tree line moves it. Against Kingfisher's 229-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Kingfisher
Each reading below is measured for Kingfisher itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredKingfisher 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
MeasuredKingfisher sits in USDA hardiness zone 7b.
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 Kingfisher is in
Kingfisher sits in the Central Great Plains — EPA Level III, inside the wider Great Plains. That is read at Kingfisher's own centroid rather than borrowed from Kingfisher County.
What Grows in Kingfisher
Every plant below cleared Kingfisher's own zone 7b and its 229-day season. Each card opens that plant's Oklahoma profile. How we score.
Is it too late to plant in Kingfisher?
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 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 11 — long-season crops need about 90 days of runway, quick greens only 30. Here the season winds down slowly: late sowings, a real autumn harvest, and garlic in the ground before the first hard freeze.
What's on the federal record near Kingfisher
Closest first, within ~10 miles of Kingfisher. Listing isn't leaking, and distance isn't exposure.
- Love's Country Store #121Underground Storage Tanks · 2100 ft
- Kingfisher South StorageUnderground Storage Tanks · 2200 ft
- Dorothy F MitchellUnderground Storage Tanks · 2500 ft
- Jacket ExpressUnderground Storage Tanks · 2500 ft
- JOHNSONS OF KINGFISHERBrownfields · 2600 ft
- Bob BoeckmanUnderground Storage Tanks · 2600 ft
- Jones ApcoUnderground Storage Tanks · 2600 ft
- BAUSTERT MOTORSBrownfields · 0.5 mi
- Neighbors Mini Mart # 2Underground Storage Tanks · 0.6 mi
- Laubach-Dobrinski ChevUnderground Storage Tanks · 0.7 mi
- TRAILERS BY DORSEY INCBrownfields · 0.7 mi
- George PappeUnderground Storage Tanks · 0.8 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Kingfisher'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 Kingfisher.
Total Sites
96
within ~10 miles of Kingfisher
Risk Level
Moderate
Highest-severity
1 Toxics Release Inventory facility
Sources Checked
within ~10 miles of Kingfisher
Severity Distribution
within ~10 miles of Kingfisher
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Kingfisher, Nitrate runs higher than the national average — 28 sites within ~10 miles of Kingfisher. It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
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 Kingfisher
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 Kingfisher average
Your land is one point inside Kingfisher
Everything above resolves to Kingfisher as a whole — one PHZM band and one 28°F frost record, read across 3K 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 Kingfisher Average
Kingfisher Average
- ●USDA Zones 7b, averaged across Kingfisher
- ●One soil character for all of Kingfisher
- ●Frost dates read at Kingfisher's scale: Mar 27 to Nov 11
YOUR Parcel
- ✓Your exact zone, not Kingfisher's 7b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Kingfisher
Pull a site-specific report for your exact address in Kingfisher, Oklahoma — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Kingfisher averages can't show:
We read public map data around Kingfisher — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Kingfisher average
How we know this about Kingfisher
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 Kingfisher’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 Kingfisher
When does frost risk typically end in Kingfisher?
The last hard freeze (28°F) in Kingfisher 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 Kingfisher?
The first hard freeze (28°F) in Kingfisher typically arrives around Nov 11, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 28, so the watching starts about Oct 12 — about 229 days after the spring freeze cleared.
How long is the growing season in Kingfisher?
Measured between 28°F hard freezes, Kingfisher sees about 229 frost-free days — roughly Mar 27 through Nov 11, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 17 to Oct 28, about 194 days.
Is the soil safe to grow vegetables in Kingfisher?
The federal record around Kingfisher shows 96 documented sites, mostly Underground Storage Tanks entries (54), the nearest Underground Storage Tanks record about 0.4 miles out — a typical footprint for a growing area, and proximity to a documented site is information, not a diagnosis of any one yard. It's worth seeing which recorded sites sit closest to where you grow, and testing the soil before new food beds near any of them.
How do I protect my plants from frost in Kingfisher?
From about Oct 12 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 11 (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 11. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Kingfisher's scale — its 7b band and its 229-day season. Your yard writes its own version of Kingfisher'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 Kingfisher’s own scale
6 of the readings below were taken at Kingfisher's own scale — its own ~229-day season between 28°F freezes, the 2,856 acres it covers and 96 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Kingfisher's own USDA hardiness band, zones 7bUSDA PHZM 2023
- Kingfisher's own 28°F hard-freeze dates, about Mar 27 and Nov 11 and the ~229-day span between themNOAA 1991–2020 Climate Normals
- 96 documented contamination sites on the federal record near Kingfisher, the closest Underground Storage Tanks record about 0.4 miles out from the town centreFederal environmental registers
- Kingfisher's boundary and the 2,856 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7b and a ~229-day seasonGrowable Ground crop-matching engine
- The ecoregion at Kingfisher's own centroid, the Central Great PlainsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Kingfisher's 2,856 acres read through its county's SSURGO summaryfrom Kingfisher County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Kingfisher 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 Kingfisher County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Kingfisher's 2,856 acreswhy one lot differs from the next →
- Which side of Kingfisher you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 2,856 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 Kingfisher-wide figureread your own land →
More in Oklahoma
Wider growing context
What grows across OklahomaKingfisher sits outside our named growing regions, so Oklahoma as a whole is its closest context here.
Nearby growing guides