Turpin, Oklahoma, sits in USDA hardiness zone 6b — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
Well-matched crops include cabbage, hazelnut, lavender, and collard greens, and the gap between "grows in the area" and "grows in your yard" is closed by soil, sun, and drainage.
Even in Turpin, 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 Turpin 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 Turpin — soil, climate, flood, and parcel records. How we handle your address.
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Turpin — the short answer
Turpin, Oklahoma: USDA zone 6b, about 208 days between hard freezes, across 639 acres of town.
- USDA zone
- 6b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 6
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 31
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~208
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 639 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 6b is Turpin's average, not your lot's — a low corner or a tree line moves it. Against Turpin's 208-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Turpin
Each reading below is measured for Turpin itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredTurpin runs about 208 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
MeasuredTurpin sits in USDA hardiness zone 6b.
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 Turpin is in
Turpin sits in the High Plains — EPA Level III, inside the wider Great Plains. That is read at Turpin's own centroid, and it is not what its county reads: Beaver County is mostly Southwestern Tablelands. The wider page above you is answering a different question about different ground.
What Grows in Turpin
Every plant below cleared Turpin's own zone 6b and its 208-day season. Each card opens that plant's Oklahoma profile. How we score.
Is it too late to plant in Turpin?
For most of the year, no — what changes is which crops still fit the days remaining. Cool-season crops can go in from around Mar 9; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 6 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 31 — 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 Turpin
Closest first, within ~10 miles of Turpin. Listing isn't leaking, and distance isn't exposure.
- Lazy DS C Store LLDUnderground Storage Tanks · 0.5 mi
- Turpin Jack & JillUnderground Storage Tanks · 0.5 mi
- 05N-20E-27 DCC 1Nitrate · 0.6 mi
- Well Owner Name: BruceNitrate · 0.8 mi
- VALERO PARTNERS NORTH TEXAS LLC / TURPIN REFINED PROD TERMLBrownfields · 1.1 mi
- VALERO PARTNERS NORTH TEXAS LLC / TURPIN REFINED PROD TERMLToxics Release Inventory · 1.1 mi
- Natural Gas Pipeline Co Of AmerUnderground Storage Tanks · 3.0 mi
- Beaver County Compressor StaUnderground Storage Tanks · 3.0 mi
- 04N-20E-05 C 1Nitrate · 3.5 mi
- 05N-20E-02 CDD 3Nitrate · 3.7 mi
- Panhandle FeedyardUnderground Storage Tanks · 4.1 mi
- 05N-21E-20 BAD 1Nitrate · 4.2 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Turpin'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 Turpin.
Total Sites
135
within ~10 miles of Turpin
Risk Level
Moderate
Highest-severity
1 Toxics Release Inventory facility
Sources Checked
within ~10 miles of Turpin
Severity Distribution
within ~10 miles of Turpin
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Turpin, Nitrate runs higher than the national average — 124 sites within ~10 miles of Turpin. That's not a problem with your land — it's information about it.
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 Turpin
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 Turpin average
Your land is one point inside Turpin
Everything above resolves to Turpin as a whole — one PHZM band and one 28°F frost record, read across 639 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 Turpin Average
Turpin Average
- ●USDA Zones 6b, averaged across Turpin
- ●One soil character for all of Turpin
- ●Frost dates read at Turpin's scale: Apr 6 to Oct 31
YOUR Parcel
- ✓Your exact zone, not Turpin's 6b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Turpin
Pull a site-specific report for your exact address in Turpin, Oklahoma — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Turpin averages can't show:
We read public map data around Turpin — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Turpin average
How we know this about Turpin
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 Turpin’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 Turpin
When does frost risk typically end in Turpin?
The last hard freeze (28°F) in Turpin typically lands around Apr 6, 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 27.
When is the first frost in Turpin?
The first hard freeze (28°F) in Turpin typically arrives around Oct 31, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 17, so the watching starts about Oct 1 — about 208 days after the spring freeze cleared.
How long is the growing season in Turpin?
Measured between 28°F hard freezes, Turpin sees about 208 frost-free days — roughly Apr 6 through Oct 31, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 27 to Oct 17, about 173 days.
Is the soil safe to grow vegetables in Turpin?
The federal record around Turpin shows 135 documented sites, mostly Nitrate entries (124), the nearest Underground Storage Tanks record about 0.5 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 Turpin?
From about Oct 1 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 Oct 31 (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 Oct 31. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Turpin's scale — its 6b band and its 208-day season. Your yard writes its own version of Turpin'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 Turpin’s own scale
6 of the readings below were taken at Turpin's own scale — its own ~208-day season between 28°F freezes, the 639 acres it covers and 135 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Turpin's own USDA hardiness band, zones 6bUSDA PHZM 2023
- Turpin's own 28°F hard-freeze dates, about Apr 6 and Oct 31 and the ~208-day span between themNOAA 1991–2020 Climate Normals
- 135 documented contamination sites on the federal record near Turpin, the closest Underground Storage Tanks record about 0.5 miles out from the town centreFederal environmental registers
- Turpin's boundary and the 639 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6b and a ~208-day seasonGrowable Ground crop-matching engine
- Turpin sits in the High Plains — not the ecoregion its county mostly readsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Turpin's 639 acres read through its county's SSURGO summaryfrom Beaver County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Beaver 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 Beaver County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Turpin's 639 acreswhy one lot differs from the next →
- Which side of Turpin you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 639 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks 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 Turpin-wide figureread your own land →
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