Warwick, 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 Warwick, 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 Warwick 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 Warwick — soil, climate, flood, and parcel records. How we handle your address.
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Warwick — the short answer
Warwick, Oklahoma: USDA zone 7b, about 239 days between hard freezes, across 2K acres of town.
- USDA zone
- 7b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 19
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 13
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~239
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town 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 Warwick's average, not your lot's — a low corner or a tree line moves it. Against Warwick's 239-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Warwick
Each reading below is measured for Warwick itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredWarwick runs about 239 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
MeasuredWarwick 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 Warwick is in
Warwick sits in the Cross Timbers — EPA Level III, inside the wider Great Plains. That is read at Warwick's own centroid rather than borrowed from Lincoln County.
What Grows in Warwick
Every plant below cleared Warwick's own zone 7b and its 239-day season. Each card opens that plant's Oklahoma profile. How we score.
Is it too late to plant in Warwick?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Feb 19; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 19 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 13 — 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 Warwick
Closest first, within ~10 miles of Warwick. Listing isn't leaking, and distance isn't exposure.
- BIGGS AIRCRAFTBrownfields · 1.7 mi
- ON CUE #4103Brownfields · 2.9 mi
- Ez Go #56Underground Storage Tanks · 2.9 mi
- Turk's Country StoreUnderground Storage Tanks · 2.9 mi
- Koch Industries IncUnderground Storage Tanks · 2.9 mi
- Bus BarnUnderground Storage Tanks · 3.3 mi
- 14N-03E-13 BBB 1Nitrate · 3.4 mi
- Ford GulfUnderground Storage Tanks · 3.4 mi
- 14N-02E-26 ADD 1Nitrate · 3.4 mi
- OnCue 4103Underground Storage Tanks · 3.5 mi
- 15N-03E-31 BAA 2 NOTS 2Nitrate · 3.5 mi
- 15N-02E-35 CDD 1Nitrate · 4.0 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Warwick'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 Warwick.
Total Sites
94
within ~10 miles of Warwick
Risk Level
Moderate
Highest-severity
2 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of Warwick
Severity Distribution
within ~10 miles of Warwick
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Warwick, Nitrate runs higher than the national average — 46 sites within ~10 miles of Warwick. Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
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 Warwick
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 Warwick average
Your land is one point inside Warwick
Everything above resolves to Warwick 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 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 Warwick Average
Warwick Average
- ●USDA Zones 7b, averaged across Warwick
- ●One soil character for all of Warwick
- ●Frost dates read at Warwick's scale: Mar 19 to Nov 13
YOUR Parcel
- ✓Your exact zone, not Warwick's 7b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Warwick
Pull a site-specific report for your exact address in Warwick, Oklahoma — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Warwick averages can't show:
We read public map data around Warwick — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Warwick average
How we know this about Warwick
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 Warwick’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 Warwick
When does frost risk typically end in Warwick?
The last hard freeze (28°F) in Warwick typically lands around Mar 19, 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 9.
When is the first frost in Warwick?
The first hard freeze (28°F) in Warwick typically arrives around Nov 13, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 30, so the watching starts about Oct 14 — about 239 days after the spring freeze cleared.
How long is the growing season in Warwick?
Measured between 28°F hard freezes, Warwick sees about 239 frost-free days — roughly Mar 19 through Nov 13, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 9 to Oct 30, about 204 days.
Is the soil safe to grow vegetables in Warwick?
The federal record around Warwick shows 94 documented sites, mostly Nitrate entries (46), the nearest Brownfields record about 1.7 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 Warwick?
From about Oct 14 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 13 (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 13. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Warwick's scale — its 7b band and its 239-day season. Your yard writes its own version of Warwick'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 Warwick’s own scale
6 of the readings below were taken at Warwick's own scale — its own ~239-day season between 28°F freezes, the 1,757 acres it covers and 94 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Warwick's own USDA hardiness band, zones 7bUSDA PHZM 2023
- Warwick's own 28°F hard-freeze dates, about Mar 19 and Nov 13 and the ~239-day span between themNOAA 1991–2020 Climate Normals
- 94 documented contamination sites on the federal record near Warwick, the closest Brownfields record about 1.7 miles out from the town centreFederal environmental registers
- Warwick's boundary and the 1,757 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7b and a ~239-day seasonGrowable Ground crop-matching engine
- The ecoregion at Warwick's own centroid, the Cross TimbersUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Warwick's 1,757 acres read through its county's SSURGO summaryfrom Lincoln County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Lincoln 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 Lincoln County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Warwick's 1,757 acreswhy one lot differs from the next →
- Which side of Warwick you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,757 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields record about 1.7 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 Warwick-wide figureread your own land →
More in Oklahoma
Wider growing context
What grows across OklahomaWarwick sits outside our named growing regions, so Oklahoma as a whole is its closest context here.