Spavinaw, Oklahoma, sits in USDA hardiness zone 7a — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
Growers here do well with cabbage, hazelnut, california poppy, and collard greens — with the usual caveat that any single yard's soil, sun, and drainage cast the deciding vote.
Even in Spavinaw, 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 Spavinaw 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 Spavinaw — soil, climate, flood, and parcel records. How we handle your address.
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Spavinaw — the short answer
Spavinaw, Oklahoma: USDA zone 7a, about 233 days between hard freezes, across 265 acres of town.
- USDA zone
- 7a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 23
- 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
- ~233
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 265 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 7a is Spavinaw's average, not your lot's — a low corner or a tree line moves it. Against Spavinaw's 233-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Spavinaw
Each reading below is measured for Spavinaw itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredSpavinaw runs about 233 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
MeasuredSpavinaw sits in USDA hardiness zone 7a.
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 Spavinaw is in
Spavinaw sits in the Ozark Highlands — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Spavinaw's own centroid, and it is not what its county reads: Mayes County is mostly Central Irregular Plains. The wider page above you is answering a different question about different ground.
What Grows in Spavinaw
Every plant below cleared Spavinaw's own zone 7a and its 233-day season. Each card opens that plant's Oklahoma profile. How we score.
Is it too late to plant in Spavinaw?
For most of the year, no — what changes is which crops still fit the days remaining. Cool-season crops can go in from around Feb 23; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 23 (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. A long window like this one runs successions deep into fall — and even its last weeks take quick greens and garlic.
What's on the federal record near Spavinaw
Closest first, within ~10 miles of Spavinaw. Listing isn't leaking, and distance isn't exposure.
- C & K GarageUnderground Storage Tanks · 1200 ft
- Thomas D Self/David L ClarkUnderground Storage Tanks · 1200 ft
- Leon's Dx StationUnderground Storage Tanks · 1300 ft
- Pit StopUnderground Storage Tanks · 1500 ft
- Spavinaw City Project Site #1Underground Storage Tanks · 1600 ft
- Spavinaw City Project Site #3Underground Storage Tanks · 1800 ft
- Lake Spavinaw Maintenance ShopUnderground Storage Tanks · 0.7 mi
- T General Store Inc.Underground Storage Tanks · 1.1 mi
- KETCHUM PWAPFAS · 3.8 mi
- MAYES CO RWD # 6PFAS · 3.8 mi
- FORMER DENTSPLY TULSA DENTAL SPEC SPORTSWIREBrownfields · 4.0 mi
- Wickliffe SchoolsUnderground Storage Tanks · 4.0 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Spavinaw'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 Spavinaw.
Sources Checked
within ~10 miles of Spavinaw
Severity Distribution
within ~10 miles of Spavinaw
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Spavinaw, two things run higher than the national average within ~10 miles of Spavinaw — PFAS (3 sites) and Underground Storage Tanks (41 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.
Underground Storage Tanks: Underground storage tanks are the single most common source of soil contamination near homes and gardens.
Test irrigation water source — this is the primary pathway for PFAS to reach garden crops.
Use raised beds with imported soil — this eliminates the primary soil-contact pathway.
Check your specific parcel in Spavinaw
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 Spavinaw average
Your land is one point inside Spavinaw
Everything above resolves to Spavinaw as a whole — one PHZM band and one 28°F frost record, read across 265 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 Spavinaw Average
Spavinaw Average
- ●USDA Zones 7a, averaged across Spavinaw
- ●One soil character for all of Spavinaw
- ●Frost dates read at Spavinaw's scale: Mar 23 to Nov 11
YOUR Parcel
- ✓Your exact zone, not Spavinaw's 7a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Spavinaw
Pull a site-specific report for your exact address in Spavinaw, Oklahoma — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Spavinaw averages can't show:
We read public map data around Spavinaw — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Spavinaw average
How we know this about Spavinaw
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 Spavinaw’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 Spavinaw
When does frost risk typically end in Spavinaw?
The last hard freeze (28°F) in Spavinaw typically lands around Mar 23, 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 13.
When is the first frost in Spavinaw?
The first hard freeze (28°F) in Spavinaw 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 233 days after the spring freeze cleared.
How long is the growing season in Spavinaw?
Measured between 28°F hard freezes, Spavinaw sees about 233 frost-free days — roughly Mar 23 through Nov 11, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 13 to Oct 28, about 198 days.
Is the soil safe to grow vegetables in Spavinaw?
The federal record around Spavinaw shows 49 documented sites, mostly Underground Storage Tanks entries (41), the nearest Underground Storage Tanks record about 0.2 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 Spavinaw?
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 Spavinaw's scale — its 7a band and its 233-day season. Your yard writes its own version of Spavinaw'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 Spavinaw’s own scale
6 of the readings below were taken at Spavinaw's own scale — its own ~233-day season between 28°F freezes, the 265 acres it covers and 49 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Spavinaw's own USDA hardiness band, zones 7aUSDA PHZM 2023
- Spavinaw's own 28°F hard-freeze dates, about Mar 23 and Nov 11 and the ~233-day span between themNOAA 1991–2020 Climate Normals
- 49 documented contamination sites on the federal record near Spavinaw, the closest Underground Storage Tanks record about 0.2 miles out from the town centreFederal environmental registers
- Spavinaw's boundary and the 265 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7a and a ~233-day seasonGrowable Ground crop-matching engine
- Spavinaw sits in the Ozark Highlands — not the ecoregion its county mostly readsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Spavinaw's 265 acres read through its county's SSURGO summaryfrom Mayes County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Mayes 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 Mayes County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Spavinaw's 265 acreswhy one lot differs from the next →
- Which side of Spavinaw you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 265 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.2 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 Spavinaw-wide figureread your own land →
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