Granite, 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 Granite, 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 Granite 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 Granite — soil, climate, flood, and parcel records. How we handle your address.
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Granite — the short answer
Granite, Oklahoma: USDA zone 7b, about 232 days between hard freezes, across 2K acres of town.
- USDA zone
- 7b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 24
- 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
- ~232
- 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 Granite's average, not your lot's — a low corner or a tree line moves it. Against Granite's 232-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Granite
Each reading below is measured for Granite itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredGranite runs about 232 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
MeasuredGranite 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 Granite is in
Granite sits in the Central Great Plains — EPA Level III, inside the wider Great Plains. That is read at Granite's own centroid rather than borrowed from Greer County.
What Grows in Granite
Every plant below cleared Granite's own zone 7b and its 232-day season. Each card opens that plant's Oklahoma profile. How we score.
Is it too late to plant in Granite?
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 24; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 24 (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 Granite
Closest first, within ~10 miles of Granite. Listing isn't leaking, and distance isn't exposure.
- GRANITE VO-TECH TRAIN CTRBrownfields · 0.5 mi
- Sunnys ExpressUnderground Storage Tanks · 0.7 mi
- J & J ServiceUnderground Storage Tanks · 0.7 mi
- Oklahoma State ReformatoryUnderground Storage Tanks · 0.8 mi
- Coop Service CenterUnderground Storage Tanks · 0.9 mi
- Calhoun's Qwik StopUnderground Storage Tanks · 0.9 mi
- Roberts 66Underground Storage Tanks · 0.9 mi
- Greer County Dist #2Underground Storage Tanks · 1.0 mi
- Greer Co Dist 2-Storage YardUnderground Storage Tanks · 1.0 mi
- Anz, Inc.Underground Storage Tanks · 1.2 mi
- 05N-21W-13 DAC 1Nitrate · 3.2 mi
- GRANITE WATER WELL ROUNDUP SPILLSuperfund · 3.3 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Granite'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 Granite.
Total Sites
76
within ~10 miles of Granite
Risk Level
Elevated
Highest-severity
1 Superfund site (none NPL-listed)
Sources Checked
within ~10 miles of Granite
Severity Distribution
within ~10 miles of Granite
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Granite, Mining runs higher than the national average — 15 sites within ~10 miles of Granite. That's not a problem with your land — it's information about it.
Mining: Mining sites — both historic and active — can leach heavy metals (arsenic, lead, cadmium, mercury) into soil and water for centuries after operations cease.
Test soil for heavy metals (lead, arsenic, cadmium, mercury) — this is essential near any mining site.
Check your specific parcel in Granite
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 Granite average
Your land is one point inside Granite
Everything above resolves to Granite 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 Granite Average
Granite Average
- ●USDA Zones 7b, averaged across Granite
- ●One soil character for all of Granite
- ●Frost dates read at Granite's scale: Mar 24 to Nov 11
YOUR Parcel
- ✓Your exact zone, not Granite's 7b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Granite
Pull a site-specific report for your exact address in Granite, Oklahoma — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Granite averages can't show:
We read public map data around Granite — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Granite average
How we know this about Granite
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 Granite’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 Granite
When does frost risk typically end in Granite?
The last hard freeze (28°F) in Granite typically lands around Mar 24, 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 14.
When is the first frost in Granite?
The first hard freeze (28°F) in Granite 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 232 days after the spring freeze cleared.
How long is the growing season in Granite?
Measured between 28°F hard freezes, Granite sees about 232 frost-free days — roughly Mar 24 through Nov 11, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 14 to Oct 28, about 197 days.
Is the soil safe to grow vegetables in Granite?
The federal record around Granite is a meaningful one — 76 documented sites, mostly Underground Storage Tanks entries (40), the nearest Brownfields record about 0.5 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 Granite?
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 Granite's scale — its 7b band and its 232-day season. Your yard writes its own version of Granite'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 Granite’s own scale
6 of the readings below were taken at Granite's own scale — its own ~232-day season between 28°F freezes, the 2,157 acres it covers and 76 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Granite's own USDA hardiness band, zones 7bUSDA PHZM 2023
- Granite's own 28°F hard-freeze dates, about Mar 24 and Nov 11 and the ~232-day span between themNOAA 1991–2020 Climate Normals
- 76 documented contamination sites on the federal record near Granite, the closest Brownfields record about 0.5 miles out from the town centreFederal environmental registers
- Granite's boundary and the 2,157 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7b and a ~232-day seasonGrowable Ground crop-matching engine
- The ecoregion at Granite's own centroid, the Central Great PlainsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Granite's 2,157 acres read through its county's SSURGO summaryfrom Greer County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Greer 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 Greer County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Granite's 2,157 acreswhy one lot differs from the next →
- Which side of Granite you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 2,157 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields record about 0.5 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 Granite-wide figureread your own land →
More in Oklahoma
Wider growing context
What grows across OklahomaGranite sits outside our named growing regions, so Oklahoma as a whole is its closest context here.