Madill, Oklahoma, sits in USDA hardiness zone 8a — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
The conditions favor cabbage, fig, california poppy, and collard greens, among others — though every individual site edits that list with its own soil, sun, and drainage.
Even in Madill, 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 Madill 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 Madill — soil, climate, flood, and parcel records. How we handle your address.
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Madill — the short answer
Madill, Oklahoma: USDA zone 8a, about 264 days between hard freezes, across 3K acres of city.
- USDA zone
- 8a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 4
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 23
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~264
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 3K 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 8a is Madill's average, not your lot's — a low corner or a tree line moves it. Against Madill's 264-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Madill
Each reading below is measured for Madill itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredMadill runs about 264 days between hard freezes — close to year-round growing.
Frost is rarely the limit here; winter plantings are as real as summer ones, and the harder question is which crops shrug off the summer heat.
Grow cool-season crops through the mild winter, and choose heat-tolerant varieties for the summer beds.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredMadill sits in USDA hardiness zone 8a.
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 Madill is in
Madill sits in the Cross Timbers — EPA Level III, inside the wider Great Plains. That is read at Madill's own centroid rather than borrowed from Marshall County.
What Grows in Madill
Every plant below cleared Madill's own zone 8a and its 264-day season. Each card opens that plant's Oklahoma profile. How we score.
Is it too late to plant in Madill?
Too late for some crops, right on time for others — a growing season is a sequence, not a deadline. Cool-season crops can go in from around Feb 4; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 4 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 23 — long-season crops need about 90 days of runway, quick greens only 30. And with a calendar this mild, the honest answer is that planting barely stops — winter opens seasons colder regions never see.
What's on the federal record near Madill
Closest first, within ~10 miles of Madill. Listing isn't leaking, and distance isn't exposure.
- Kerr Mcgee #6397Underground Storage Tanks · 950 ft
- Wagon Wheel CafeUnderground Storage Tanks · 1100 ft
- Madill Public SchoolsUnderground Storage Tanks · 1100 ft
- Dale WaymireUnderground Storage Tanks · 1200 ft
- MADILLPFAS · 1200 ft
- Oklahoma Welders SupplyUnderground Storage Tanks · 1200 ft
- Paul's CitgoUnderground Storage Tanks · 1300 ft
- Madill Dx/Od'sUnderground Storage Tanks · 1300 ft
- Okla. Welder's SupplyUnderground Storage Tanks · 1300 ft
- Phillips 66 Co #016245Underground Storage Tanks · 1400 ft
- Cumberland Cove ResortUnderground Storage Tanks · 1400 ft
- Love's Country Store #84Underground Storage Tanks · 1500 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Madill'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 Madill.
Total Sites
98
within ~10 miles of Madill
Risk Level
Moderate
Highest-severity
8 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of Madill
Severity Distribution
within ~10 miles of Madill
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Madill, two things run higher than the national average within ~10 miles of Madill — Toxics Release Inventory (8 sites) and Underground Storage Tanks (76 sites). It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.
Underground Storage Tanks: Underground storage tanks are the single most common source of soil contamination near homes and gardens.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Use raised beds with imported soil — this eliminates the primary soil-contact pathway.
Check your specific parcel in Madill
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 Madill average
Your land is one point inside Madill
Everything above resolves to Madill as a whole — one PHZM band and one 28°F frost record, read across 3K 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 Madill Average
Madill Average
- ●USDA Zones 8a, averaged across Madill
- ●One soil character for all of Madill
- ●Frost dates read at Madill's scale: Mar 4 to Nov 23
YOUR Parcel
- ✓Your exact zone, not Madill's 8a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Madill
Pull a site-specific report for your exact address in Madill, Oklahoma — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Madill averages can't show:
We read public map data around Madill — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Madill average
How we know this about Madill
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 Madill’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 Madill
When does frost risk typically end in Madill?
The last hard freeze (28°F) in Madill typically lands around Mar 4, 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 Mar 25.
When is the first frost in Madill?
The first hard freeze (28°F) in Madill typically arrives around Nov 23, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 9, so the watching starts about Oct 24 — about 264 days after the spring freeze cleared.
How long is the growing season in Madill?
Measured between 28°F hard freezes, Madill sees about 264 frost-free days — roughly Mar 4 through Nov 23, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Mar 25 to Nov 9, about 229 days.
Is the soil safe to grow vegetables in Madill?
The federal record around Madill shows 98 documented sites, mostly Underground Storage Tanks entries (76), 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 Madill?
From about Oct 24 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 23 (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 23. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Madill's scale — its 8a band and its 264-day season. Your yard writes its own version of Madill'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 Madill’s own scale
6 of the readings below were taken at Madill's own scale — its own ~264-day season between 28°F freezes, the 2,827 acres it covers and 98 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Madill's own USDA hardiness band, zones 8aUSDA PHZM 2023
- Madill's own 28°F hard-freeze dates, about Mar 4 and Nov 23 and the ~264-day span between themNOAA 1991–2020 Climate Normals
- 98 documented contamination sites on the federal record near Madill, the closest Underground Storage Tanks record about 0.2 miles out from the town centreFederal environmental registers
- Madill's boundary and the 2,827 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8a and a ~264-day seasonGrowable Ground crop-matching engine
- The ecoregion at Madill's own centroid, the Cross TimbersUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Madill's 2,827 acres read through its county's SSURGO summaryfrom Marshall County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Marshall 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 Marshall County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Madill's 2,827 acreswhy one lot differs from the next →
- Which side of Madill you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 2,827 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 Madill-wide figureread your own land →
More in Oklahoma
Wider growing context
What grows across OklahomaMadill sits outside our named growing regions, so Oklahoma as a whole is its closest context here.
Nearby growing guides