Glenpool, 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 Glenpool, 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 Glenpool 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 Glenpool — soil, climate, flood, and parcel records. How we handle your address.
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Glenpool — the short answer
Glenpool, Oklahoma: USDA zone 7b, about 242 days between hard freezes, across 7K acres of city.
- 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 15
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~242
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 7K 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 Glenpool's average, not your lot's — a low corner or a tree line moves it. Against Glenpool's 242-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Glenpool
Each reading below is measured for Glenpool itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredGlenpool 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
MeasuredGlenpool 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 Glenpool is in
Glenpool sits in the Central Irregular Plains — EPA Level III, inside the wider Great Plains. That is read at Glenpool's own centroid rather than borrowed from Tulsa County.
What Grows in Glenpool
Every plant below cleared Glenpool'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 Glenpool?
Almost never — the real question is what to plant next. 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 15 — 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 Glenpool
Closest first, within ~10 miles of Glenpool. Listing isn't leaking, and distance isn't exposure.
- City Of GlenpoolUnderground Storage Tanks · 1900 ft
- SAINT FRANCIS HOSPITAL-GLENPOOLBrownfields · 2100 ft
- TPLI KANSAS OPERATION - OKBrownfields · 2100 ft
- Glenpool Public SchoolsUnderground Storage Tanks · 2300 ft
- Mr Quick #1 - GlenpoolUnderground Storage Tanks · 2400 ft
- H & Z MartUnderground Storage Tanks · 0.7 mi
- Warrior StationUnderground Storage Tanks · 0.7 mi
- Glenpool PawnUnderground Storage Tanks · 0.7 mi
- Mid-Continent/Midco Concrete CoUnderground Storage Tanks · 0.7 mi
- Royal TripUnderground Storage Tanks · 0.8 mi
- UnregisteredUnderground Storage Tanks · 0.8 mi
- TURBOTECH INCBrownfields · 1.1 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Glenpool'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 Glenpool.
Total Sites
604
within ~10 miles of Glenpool
Risk Level
Elevated
Highest-severity
4 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Glenpool
Severity Distribution
within ~10 miles of Glenpool
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Glenpool, two things run higher than the national average within ~10 miles of Glenpool — PFAS (8 sites) and Toxics Release Inventory (57 sites). It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
PFAS: PFAS (per- and polyfluoroalkyl substances) are called "forever chemicals" because they do not biodegrade.
Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.
Test irrigation water source — this is the primary pathway for PFAS to reach garden crops.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Check your specific parcel in Glenpool
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 Glenpool average
Your land is one point inside Glenpool
Everything above resolves to Glenpool as a whole — one PHZM band and one 28°F frost record, read across 7K 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 Glenpool Average
Glenpool Average
- ●USDA Zones 7b, averaged across Glenpool
- ●One soil character for all of Glenpool
- ●Frost dates read at Glenpool's scale: Mar 18 to Nov 15
YOUR Parcel
- ✓Your exact zone, not Glenpool's 7b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Glenpool
Pull a site-specific report for your exact address in Glenpool, Oklahoma — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Glenpool averages can't show:
We read public map data around Glenpool — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Glenpool average
How we know this about Glenpool
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 Glenpool’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 Glenpool
When does frost risk typically end in Glenpool?
The last hard freeze (28°F) in Glenpool 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 Glenpool?
The first hard freeze (28°F) in Glenpool typically arrives around Nov 15, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 1, so the watching starts about Oct 16 — about 242 days after the spring freeze cleared.
How long is the growing season in Glenpool?
Measured between 28°F hard freezes, Glenpool sees about 242 frost-free days — roughly Mar 18 through Nov 15, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 8 to Nov 1, about 207 days.
Is the soil safe to grow vegetables in Glenpool?
The federal record around Glenpool is a meaningful one — 604 documented sites, mostly Underground Storage Tanks entries (348), the nearest Underground Storage Tanks record about 0.4 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 Glenpool?
From about Oct 16 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 15 (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 15. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Glenpool's scale — its 7b band and its 242-day season. Your yard writes its own version of Glenpool'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 Glenpool’s own scale
6 of the readings below were taken at Glenpool's own scale — its own ~242-day season between 28°F freezes, the 7,074 acres it covers and 604 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Glenpool's own USDA hardiness band, zones 7bUSDA PHZM 2023
- Glenpool's own 28°F hard-freeze dates, about Mar 18 and Nov 15 and the ~242-day span between themNOAA 1991–2020 Climate Normals
- 604 documented contamination sites on the federal record near Glenpool, the closest Underground Storage Tanks record about 0.4 miles out from the town centreFederal environmental registers
- Glenpool's boundary and the 7,074 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 Glenpool's own centroid, the Central Irregular PlainsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Glenpool's 7,074 acres read through its county's SSURGO summaryfrom Tulsa County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Tulsa 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 Tulsa County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Glenpool's 7,074 acreswhy one lot differs from the next →
- Which side of Glenpool you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 7,074 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.4 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 Glenpool-wide figureread your own land →
More in Oklahoma
Wider growing context
What grows across OklahomaGlenpool sits outside our named growing regions, so Oklahoma as a whole is its closest context here.