Woods County, in Oklahoma, sits in USDA hardiness zone 7a — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
Crops well matched to these conditions include cabbage, hazelnut, california poppy, and collard greens — though what thrives on any one site still turns on its specific soil, sun, and drainage.
Grounded in USDA PHZM 2023 · Growable Ground suitability scoring · NOAA 1991–2020 Climate Normals
Woods County holds more than one microclimate.
Soils and elevations shift across Woods County, so your frost dates and drainage aren't the county average. 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 Woods County — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Woods County — the short answer
Woods County, Oklahoma: USDA zone 7a, about 216 days between hard freezes, across 823K acres.
- USDA zone
- 7a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 2
- NOAA 1991–2020 Climate Normals, 28°F
- First hard freeze (28°F)
- Nov 4
- NOAA 1991–2020 Climate Normals, 28°F
- Days between freezes
- ~216
- NOAA 1991–2020 Climate Normals, 28°F
- County area
- 823K acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. Hard-freeze dates are county 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 Woods County's average, not your lot's — a low corner or a tree line moves it. Against Woods County's 216-day season, see what your own ground reads.
Heat and winter chill in Woods County
Across a year, Woods County accumulates about 4,448 growing degree days above 50°F, about 272 fewer than the middle Oklahoma county — ahead of 16 of Oklahoma’s 77 counties. Degree days are the heat a crop actually gets to work with — more of them is more room to ripen a long-season crop before the freeze closes the window.
Winter banks about 2,378 hours below 45°F, 459 more than the Oklahoma middle of 1,919. Chill is what tells a fruit tree its dormancy is over, and it is set by climate rather than by anything you can build.
Grounded in PRISM Climate Group, Oregon State University — 1991–2020 monthly normals
Soil in Woods County
Across Woods County, the ground is predominantly Entisols, where Eda, Burford, and Tivoli are the most extensive named soil series. The soil is generally well drained with a silt loam surface. Topsoil pH runs about 7.0–7.9, slightly alkaline. Rainfall drains through hydrologic group A soils.
Soil order
Entisols
Drainage
Well drained
Prime farmland
32%
Hydric soils
1%
Soil still varies lot by lot — soil types explained.
How the ground varies across Woods County
The USDA soil survey maps 68% of Woods County as well drained — but another 30% drains differently: 11% somewhat excessively drained, 10% excessively drained.
Eda is the most extensive named soil at 10% of mapped acres, then Burford (9%) and Tivoli (8%).
Which of them your own lot sits on is a parcel question, not a county one. Check your address for the survey at your boundary.
What this means for growing in Woods County
Each reading below is measured for Woods County itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Drainage
MeasuredThe dominant soils across Woods County are well drained, in hydrologic group A — ground that drains quickly.
The upside is soil you can work early in spring and roots that never drown; the cost is that fast-draining ground dries out fast and leaches nutrients away before plants can use them.
Work in compost and mulch to hold moisture and feed, and water more often in short doses than deep and rarely.
USDA NRCS SSURGO
Surface pH
MeasuredTopsoil across Woods County runs about pH 7.0–7.9, on the alkaline side.
Many vegetables cope, but acid-lovers like blueberries struggle, and iron and manganese lock up above about pH 7.5 — leaves yellow between the veins even in rich soil.
Elemental sulfur and generous organic matter lower pH slowly for the beds that need it; test first so you add only what the soil actually calls for.
USDA NRCS SSURGO
Season length
MeasuredWoods County runs about 216 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
MeasuredWoods County 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 Woods County is in
Woods County spans 2 EPA Level III ecoregions — Central Great Plains (94%) and Southwestern Tablelands (6%). Which one your land falls in changes what grows wild there and how the ground behaves, and a county-wide answer cannot tell you which.
What Grows in Woods County
We scored all 1,086 plants against Woods County's own USDA zone 7a and its own 216-day season between hard freezes, using the same matching engine that runs a full parcel report. These cleared both. Sun, soil pH and drainage vary lot by lot — those are the parcel questions below. Each card opens that plant's Oklahoma profile.
Is it too late to plant in Woods County?
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 5; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 2 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 4 — 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.
Documented around Woods County
- monarch butterfly27 documented records
Sighting records, so they follow observers as much as insects.
What gets applied to farmland in Woods County
USGS estimates 103,634 lb of 2,4-d on Woods County farmland in 2019, its largest by weight, ahead of Glyphosate (63,968 lb) and Dicamba (13,208 lb).
Farmland across the whole county, not any one lot. Check your address for the site-by-site record.
Safe to Grow Here?
What the federal record shows across Woods County — and how to grow with it.
We checked the federal record across Woods County — 236 documented sites across 7 of the 9 source types we track.
The most significant on record: 1 Superfund site (none NPL-listed). Sites tracked in EPA's Superfund program — from assessment-stage CERCLIS entries to confirmed National Priorities List cleanup sites.
There's a meaningful federal record across Woods County — worth a look before you plant food, not a reason to hold back from growing. Proximity to a documented site is information, not a diagnosis of any one yard. A soil test before new food beds is the sensible precaution here, and the map shows exactly which sites sit where, so you can see what's actually near you.
Sources: EPA, USGS — 1.8M documented sites tracked nationwide across 9 federal source types.
What's on the federal record near Woods County
Closest first, across Woods County. Listing isn't leaking, and distance isn't exposure.
- Jim AllenUnderground Storage Tanks · 0.9 mi
- Farmers Cooperative (Avard)Underground Storage Tanks · 4.4 mi
- Liberty Booster StationUnderground Storage Tanks · 4.8 mi
- 25N-15W-08 DAC 1Nitrate · 5.1 mi
- 25N-16W-13 BBB 1Nitrate · 5.2 mi
- 26N-14W-18 CBB 1Nitrate · 6.0 mi
- Eden Booster StationUnderground Storage Tanks · 6.9 mi
- Chester M. OlsonUnderground Storage Tanks · 7.0 mi
- ROSE VALLEY PLANTToxics Release Inventory · 7.3 mi
- 26N-14W-08 BBA 1Nitrate · 7.3 mi
- WAYNOKA NATURAL GAS PROCESSING PLANTToxics Release Inventory · 7.4 mi
- 25N-16W-25 BCC 1Nitrate · 7.6 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Woods County'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 Woods County.
Total Sites
236
across Woods County
Risk Level
Elevated
Highest-severity
1 Superfund site (none NPL-listed)
Severity Distribution
across Woods County
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Woods County, two things run higher than the national average across Woods County — CAFO (6 sites) and Nitrate (108 sites). Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
CAFO: CAFOs pose a different contamination profile than chemical sources.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Wash all produce consumed raw thoroughly, especially leafy greens grown near CAFOs.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in Woods County
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 Woods County average
Your land is one point inside Woods County
Everything above resolves to Woods County as a whole — one PHZM band and one county frost record, read across 823K 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 county 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 county average.
Your Lot vs the Woods County Average
Woods County Average
- ●USDA Zones 7a, averaged across Woods County
- ●One soil character for all of Woods County
- ●Frost dates read at Woods County's scale: Apr 2 to Nov 4
YOUR Parcel
- ✓Your exact zone, not Woods County's 7a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your parcel in Woods County
Pull a site-specific report for your exact address in Woods County, Oklahoma — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Woods County averages can't show:
We read public map data around Woods County — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Woods County average
How we know this about Woods County
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at county grain; hard-freeze dates from NOAA 1991–2020 28°F normals at this county’s own record where one resolves, and the labelled statewide window where none does; soils from the USDA NRCS SSURGO survey, area-weighted across the county’s own map units; boundaries and acreage from US Census TIGER/Line 2025; the contamination and pesticide records from the federal sources named in their beats above. Where Woods County carries no record of its own, the figure is inherited and labelled — the resolution ledger below names each.
Common questions about Woods County
When does frost risk typically end in Woods County?
The last hard freeze (28°F) in Woods County typically lands around Apr 2, 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 23.
How long is the growing season in Woods County?
Measured between 28°F hard freezes, Woods County sees about 216 frost-free days — roughly Apr 2 through Nov 4, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 23 to Oct 21, about 181 days.
Is the soil safe to grow vegetables in Woods County?
The federal record around Woods County is a meaningful one — 236 documented sites, mostly Nitrate entries (108), the nearest Underground Storage Tanks record about 0.9 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.
Everything above is measured at Woods County's scale — its 7a band and its 216-day season. Your yard writes its own version of Woods County's numbers: we read soil, sun, drainage and frost at your exact address. Try it for 14 days — no card required.
Will It Grow Here?
Zone fit is the first question — each answer below reads Oklahoma's frost window, season length, and soil profile against the plant's real requirements.
What this page reads at Woods County’s own scale
9 of the readings below were taken at Woods County's own scale — its own ~216-day span between 28°F freezes, the 3 most extensive soil series mapped here and 236 documented sites inside its boundary; one is borrowed from a wider read, named and linked below.
Measured here
- Woods County's own USDA hardiness band, zones 7aUSDA PHZM 2023
- Woods County's own 28°F hard-freeze dates and its ~216-day span between themNOAA 1991–2020 Climate Normals
- The soil order, drainage, surface pH, and the 3 most extensive named soil series mapped in Woods CountyUSDA NRCS SSURGO
- 236 documented contamination sites inside the county boundary, distance-sorted from its center — the closest Underground Storage Tanks record about 0.9 miles outFederal environmental registers
- Woods County's boundary and the 823,347 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7a and a ~216-day seasonGrowable Ground crop-matching engine
- The 2 ecoregions Woods County spans, Central Great Plains the largestUS EPA Level III Ecoregions
- Open occurrence records documented in Woods County for a tracked speciesGBIF derived datasets (CC0 / CC BY 4.0)
- Which agricultural compounds go onto Woods County farmland, and roughly how muchUSGS NAWQA EPest county estimates
Inherited from a wider read
- The growing challenges every Oklahoma grower plans around — written at state scale, so they stay on the state guidefrom Oklahoma
What this page can’t tell you
- How the season shifts across Woods County — the ~216 days above is one reading at its centre; the 12 towns below each carry their owntowns in this county →
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Woods County's 823,347 acreswhy one lot differs from the next →
- Which of those 236 documented sites actually reaches your soil — that needs your address, the wind, and the groundwater directionhow we read the record →
- Where cold air settles, which slopes face the sun, and which way the wind runs on your own ground — none of it survives being averaged over Woods Countyread your own land →