Coalgate, 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.
Reliable performers under these conditions include cabbage, prickly pear, california poppy, and collard greens; what your own ground favors still comes down to its soil, sun, and drainage.
Even in Coalgate, 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 Coalgate 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 Coalgate — soil, climate, flood, and parcel records. How we handle your address.
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Coalgate — the short answer
Coalgate, Oklahoma: USDA zone 7b, about 242 days between hard freezes, across 1K acres of city.
- USDA zone
- 7b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 15
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 12
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~242
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 1K 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 Coalgate's average, not your lot's — a low corner or a tree line moves it. Against Coalgate's 242-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Coalgate
Each reading below is measured for Coalgate itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredCoalgate runs about 242 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
MeasuredCoalgate 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 Coalgate is in
Coalgate sits in the Arkansas Valley — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Coalgate's own centroid rather than borrowed from Coal County.
What Grows in Coalgate
Every plant below cleared Coalgate's own zone 7b and its 242-day season. Each card opens that plant's Oklahoma profile. How we score.
Is it too late to plant in Coalgate?
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 15; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 15 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 12 — 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 Coalgate
Closest first, within ~10 miles of Coalgate. Listing isn't leaking, and distance isn't exposure.
- Butch's QuickstopUnderground Storage Tanks · 1500 ft
- Doc IngramUnderground Storage Tanks · 1500 ft
- Coal County PropaneUnderground Storage Tanks · 1900 ft
- Shop N Hop #1Underground Storage Tanks · 1900 ft
- Former Guinn's ApcoUnderground Storage Tanks · 1900 ft
- M & MUnderground Storage Tanks · 2200 ft
- Shop N Hop #2Underground Storage Tanks · 2200 ft
- FAMILY DOLLAR # 4113Brownfields · 2400 ft
- CJ's ServicesUnderground Storage Tanks · 0.6 mi
- Circle N MarketUnderground Storage Tanks · 0.6 mi
- District EUnderground Storage Tanks · 0.6 mi
- Rick's Oil CoUnderground Storage Tanks · 0.6 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Coalgate'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 Coalgate.
Total Sites
26
within ~10 miles of Coalgate
Risk Level
Low
Highest-severity
3 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of Coalgate
Severity Distribution
within ~10 miles of Coalgate
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Coalgate, two things run higher than the national average within ~10 miles of Coalgate — Toxics Release Inventory (3 sites) and Underground Storage Tanks (17 sites). That's not a problem with your land — it's information about it.
Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.
Underground Storage Tanks: Underground storage tanks are the single most common source of soil contamination near homes and gardens.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Use raised beds with imported soil — this eliminates the primary soil-contact pathway.
Check your specific parcel in Coalgate
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 Coalgate average
Your land is one point inside Coalgate
Everything above resolves to Coalgate as a whole — one PHZM band and one 28°F frost record, read across 1K 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 Coalgate Average
Coalgate Average
- ●USDA Zones 7b, averaged across Coalgate
- ●One soil character for all of Coalgate
- ●Frost dates read at Coalgate's scale: Mar 15 to Nov 12
YOUR Parcel
- ✓Your exact zone, not Coalgate's 7b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Coalgate
Pull a site-specific report for your exact address in Coalgate, Oklahoma — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Coalgate averages can't show:
We read public map data around Coalgate — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Coalgate average
How we know this about Coalgate
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 Coalgate’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 Coalgate
When does frost risk typically end in Coalgate?
The last hard freeze (28°F) in Coalgate typically lands around Mar 15, 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 5.
When is the first frost in Coalgate?
The first hard freeze (28°F) in Coalgate typically arrives around Nov 12, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 29, so the watching starts about Oct 13 — about 242 days after the spring freeze cleared.
How long is the growing season in Coalgate?
Measured between 28°F hard freezes, Coalgate sees about 242 frost-free days — roughly Mar 15 through Nov 12, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 5 to Oct 29, about 207 days.
Is the soil safe to grow vegetables in Coalgate?
The federal record around Coalgate is light — 26 documented sites across the 9 federal source types we checked, mostly Underground Storage Tanks entries (17), the nearest Underground Storage Tanks record about 0.3 miles 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 Coalgate?
From about Oct 13 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 12 (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 12. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Coalgate's scale — its 7b band and its 242-day season. Your yard writes its own version of Coalgate'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 Coalgate’s own scale
6 of the readings below were taken at Coalgate's own scale — its own ~242-day season between 28°F freezes, the 1,162 acres it covers and 26 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Coalgate's own USDA hardiness band, zones 7bUSDA PHZM 2023
- Coalgate's own 28°F hard-freeze dates, about Mar 15 and Nov 12 and the ~242-day span between themNOAA 1991–2020 Climate Normals
- 26 documented contamination sites on the federal record near Coalgate, the closest Underground Storage Tanks record about 0.3 miles out from the town centreFederal environmental registers
- Coalgate's boundary and the 1,162 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7b and a ~242-day seasonGrowable Ground crop-matching engine
- The ecoregion at Coalgate's own centroid, the Arkansas ValleyUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Coalgate's 1,162 acres read through its county's SSURGO summaryfrom Coal County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Coal 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 Coal County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Coalgate's 1,162 acreswhy one lot differs from the next →
- Which side of Coalgate you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,162 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.3 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 Coalgate-wide figureread your own land →
More in Oklahoma
Wider growing context
What grows across OklahomaCoalgate sits outside our named growing regions, so Oklahoma as a whole is its closest context here.
Nearby growing guides