Wilburton, Oklahoma, sits in USDA hardiness zone 7b — a zone band wide enough that plant choice, not possibility, is the interesting question.
Well-matched crops include cabbage, prickly pear, california poppy, and collard greens, and the gap between "grows in the area" and "grows in your yard" is closed by soil, sun, and drainage.
Even in Wilburton, 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 Wilburton 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 Wilburton — soil, climate, flood, and parcel records. How we handle your address.
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Wilburton — the short answer
Wilburton, Oklahoma: USDA zone 7b, about 236 days between hard freezes, across 2K acres of city.
- USDA zone
- 7b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 20
- 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
- ~236
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 2K 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 Wilburton's average, not your lot's — a low corner or a tree line moves it. Against Wilburton's 236-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Wilburton
Each reading below is measured for Wilburton itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredWilburton runs about 236 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
MeasuredWilburton 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 Wilburton is in
Wilburton sits in the Arkansas Valley — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Wilburton's own centroid rather than borrowed from Latimer County.
What Grows in Wilburton
Every plant below cleared Wilburton's own zone 7b and its 236-day season. Each card opens that plant's Oklahoma profile. How we score.
Is it too late to plant in Wilburton?
Too late for some crops, right on time for others — a growing season is a sequence, not a deadline. Cool-season crops can go in from around Feb 20; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 20 (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. 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 Wilburton
Closest first, within ~10 miles of Wilburton. Listing isn't leaking, and distance isn't exposure.
- Jim Walden's SinclairUnderground Storage Tanks · 200 ft
- City Of WilburtonUnderground Storage Tanks · 550 ft
- ANCHOR DRILLING FLUIDSBrownfields · 550 ft
- Wilburton GulfUnderground Storage Tanks · 650 ft
- Wooldridge Oil Co.Underground Storage Tanks · 0.5 mi
- Jt WilliamsUnderground Storage Tanks · 0.5 mi
- Wagner Apco Service StationUnderground Storage Tanks · 0.5 mi
- Handy Stop #1Underground Storage Tanks · 0.6 mi
- Amoco Production (Wilburton YarUnderground Storage Tanks · 0.7 mi
- E-Z Mart #4420Underground Storage Tanks · 0.7 mi
- The Pit StopUnderground Storage Tanks · 0.7 mi
- CASEY'S GENERAL STORE# 3844Brownfields · 0.7 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Wilburton'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 Wilburton.
Total Sites
41
within ~10 miles of Wilburton
Risk Level
Low
Highest-severity
1 Toxics Release Inventory facility
Sources Checked
within ~10 miles of Wilburton
Severity Distribution
within ~10 miles of Wilburton
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Wilburton, Underground Storage Tanks runs higher than the national average — 28 sites within ~10 miles of Wilburton. 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.
Use raised beds with imported soil — this eliminates the primary soil-contact pathway.
Check your specific parcel in Wilburton
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 Wilburton average
Your land is one point inside Wilburton
Everything above resolves to Wilburton as a whole — one PHZM band and one 28°F frost record, read across 2K 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 Wilburton Average
Wilburton Average
- ●USDA Zones 7b, averaged across Wilburton
- ●One soil character for all of Wilburton
- ●Frost dates read at Wilburton's scale: Mar 20 to Nov 11
YOUR Parcel
- ✓Your exact zone, not Wilburton's 7b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Wilburton
Pull a site-specific report for your exact address in Wilburton, Oklahoma — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Wilburton averages can't show:
We read public map data around Wilburton — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Wilburton average
How we know this about Wilburton
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 Wilburton’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 Wilburton
When does frost risk typically end in Wilburton?
The last hard freeze (28°F) in Wilburton typically lands around Mar 20, 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 10.
When is the first frost in Wilburton?
The first hard freeze (28°F) in Wilburton 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 236 days after the spring freeze cleared.
How long is the growing season in Wilburton?
Measured between 28°F hard freezes, Wilburton sees about 236 frost-free days — roughly Mar 20 through Nov 11, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 10 to Oct 28, about 201 days.
Is the soil safe to grow vegetables in Wilburton?
The federal record around Wilburton is light — 41 documented sites across the 9 federal source types we checked, mostly Underground Storage Tanks entries (28), the nearest Underground Storage Tanks record under a tenth of a mile out — and proximity to a documented site is information, not a diagnosis of any one yard. Growing food here starts from a strong position; a soil test before new food beds settles any site-specific question.
How do I protect my plants from frost in Wilburton?
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 Wilburton's scale — its 7b band and its 236-day season. Your yard writes its own version of Wilburton'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 Wilburton’s own scale
6 of the readings below were taken at Wilburton's own scale — its own ~236-day season between 28°F freezes, the 1,989 acres it covers and 41 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Wilburton's own USDA hardiness band, zones 7bUSDA PHZM 2023
- Wilburton's own 28°F hard-freeze dates, about Mar 20 and Nov 11 and the ~236-day span between themNOAA 1991–2020 Climate Normals
- 41 documented contamination sites on the federal record near Wilburton, the closest Underground Storage Tanks record under a tenth of a mile out from the town centreFederal environmental registers
- Wilburton's boundary and the 1,989 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7b and a ~236-day seasonGrowable Ground crop-matching engine
- The ecoregion at Wilburton's own centroid, the Arkansas ValleyUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Wilburton's 1,989 acres read through its county's SSURGO summaryfrom Latimer County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Latimer 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 Latimer County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Wilburton's 1,989 acreswhy one lot differs from the next →
- Which side of Wilburton you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,989 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks 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 Wilburton-wide figureread your own land →