Limestone, Oklahoma, sits in USDA hardiness zone 7b — a zone band wide enough that plant choice, not possibility, is the interesting question.
Expect cabbage, prickly pear, california poppy, and collard greens to be strong candidates here; the deciding factors on any one parcel stay local — soil, sun, and drainage.
Even in Limestone, 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 Limestone 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 Limestone — soil, climate, flood, and parcel records. How we handle your address.
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Limestone — the short answer
Limestone, Oklahoma: USDA zone 7b, about 241 days between hard freezes, across 2K acres of town.
- USDA zone
- 7b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 18
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 14
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~241
- 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 Limestone's average, not your lot's — a low corner or a tree line moves it. Against Limestone's 241-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Limestone
Each reading below is measured for Limestone itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredLimestone runs about 241 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
MeasuredLimestone 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 Limestone is in
Limestone sits in the Central Irregular Plains — EPA Level III, inside the wider Great Plains. That is read at Limestone's own centroid rather than borrowed from Rogers County.
What Grows in Limestone
Every plant below cleared Limestone's own zone 7b and its 241-day season. Each card opens that plant's Oklahoma profile. How we score.
Is it too late to plant in Limestone?
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 18; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 18 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 14 — 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 Limestone
Closest first, within ~10 miles of Limestone. Listing isn't leaking, and distance isn't exposure.
- Former Snak-N-SmakUnderground Storage Tanks · 0.8 mi
- Checkers Country Store & DeliUnderground Storage Tanks · 2.2 mi
- Kum & Go #0847Underground Storage Tanks · 2.7 mi
- Mark's Country BrierUnderground Storage Tanks · 3.6 mi
- Hi View Mini MartUnderground Storage Tanks · 3.9 mi
- Gundy's AirportUnderground Storage Tanks · 3.9 mi
- Quiktrip #62RUnderground Storage Tanks · 4.0 mi
- WALGREENS #12161Brownfields · 4.3 mi
- Wal-Mart Neighborhood Market #4585Underground Storage Tanks · 4.5 mi
- SYNTROLEUM CORPBrownfields · 4.6 mi
- ROGERS CO RWD # 3 COT STAPFAS · 4.7 mi
- OWASSOPFAS · 4.7 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Limestone'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 Limestone.
Sources Checked
within ~10 miles of Limestone
Severity Distribution
within ~10 miles of Limestone
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Limestone, two things run higher than the national average within ~10 miles of Limestone — Toxics Release Inventory (91 sites) and PFAS (6 sites). 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.
PFAS: PFAS (per- and polyfluoroalkyl substances) are called "forever chemicals" because they do not biodegrade.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Test irrigation water source — this is the primary pathway for PFAS to reach garden crops.
Check your specific parcel in Limestone
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 Limestone average
Your land is one point inside Limestone
Everything above resolves to Limestone 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 Limestone Average
Limestone Average
- ●USDA Zones 7b, averaged across Limestone
- ●One soil character for all of Limestone
- ●Frost dates read at Limestone's scale: Mar 18 to Nov 14
YOUR Parcel
- ✓Your exact zone, not Limestone's 7b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Limestone
Pull a site-specific report for your exact address in Limestone, Oklahoma — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Limestone averages can't show:
We read public map data around Limestone — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Limestone average
How we know this about Limestone
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 Limestone’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 Limestone
When does frost risk typically end in Limestone?
The last hard freeze (28°F) in Limestone typically lands around Mar 18, 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 8.
When is the first frost in Limestone?
The first hard freeze (28°F) in Limestone typically arrives around Nov 14, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 31, so the watching starts about Oct 15 — about 241 days after the spring freeze cleared.
How long is the growing season in Limestone?
Measured between 28°F hard freezes, Limestone sees about 241 frost-free days — roughly Mar 18 through Nov 14, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 8 to Oct 31, about 206 days.
Is the soil safe to grow vegetables in Limestone?
The federal record around Limestone is a meaningful one — 432 documented sites, mostly Underground Storage Tanks entries (181), the nearest Underground Storage Tanks record about 0.8 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 Limestone?
From about Oct 15 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 14 (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 14. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Limestone's scale — its 7b band and its 241-day season. Your yard writes its own version of Limestone'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 Limestone’s own scale
6 of the readings below were taken at Limestone's own scale — its own ~241-day season between 28°F freezes, the 2,013 acres it covers and 432 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Limestone's own USDA hardiness band, zones 7bUSDA PHZM 2023
- Limestone's own 28°F hard-freeze dates, about Mar 18 and Nov 14 and the ~241-day span between themNOAA 1991–2020 Climate Normals
- 432 documented contamination sites on the federal record near Limestone, the closest Underground Storage Tanks record about 0.8 miles out from the town centreFederal environmental registers
- Limestone's boundary and the 2,013 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7b and a ~241-day seasonGrowable Ground crop-matching engine
- The ecoregion at Limestone's own centroid, the Central Irregular PlainsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Limestone's 2,013 acres read through its county's SSURGO summaryfrom Rogers County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Rogers 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 Rogers County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Limestone's 2,013 acreswhy one lot differs from the next →
- Which side of Limestone you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 2,013 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.8 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 Limestone-wide figureread your own land →
More in Oklahoma
Wider growing context
What grows across OklahomaLimestone sits outside our named growing regions, so Oklahoma as a whole is its closest context here.
Nearby growing guides