Randlett, 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.
A short list that earns its place here — cabbage, fig, california poppy, and collard greens — with any one site's soil, sun, and drainage making the final cut.
Even in Randlett, 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 Randlett 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 Randlett — soil, climate, flood, and parcel records. How we handle your address.
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Randlett — the short answer
Randlett, Oklahoma: USDA zone 8a, about 254 days between hard freezes, across 401 acres of town.
- USDA zone
- 8a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 12
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 21
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~254
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 401 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 Randlett's average, not your lot's — a low corner or a tree line moves it. Against Randlett's 254-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Randlett
Each reading below is measured for Randlett itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredRandlett runs about 254 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
MeasuredRandlett 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 Randlett is in
Randlett sits in the Central Great Plains — EPA Level III, inside the wider Great Plains. That is read at Randlett's own centroid rather than borrowed from Cotton County.
What Grows in Randlett
Every plant below cleared Randlett's own zone 8a and its 254-day season. Each card opens that plant's Oklahoma profile. How we score.
Is it too late to plant in Randlett?
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 12; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 12 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 21 — long-season crops need about 90 days of runway, quick greens only 30. With a season this long, “too late” mostly means “switch crops” — second sowings and a full fall garden are the norm, with garlic closing the year.
What's on the federal record near Randlett
Closest first, within ~10 miles of Randlett. Listing isn't leaking, and distance isn't exposure.
- Love's #734Underground Storage Tanks · 1300 ft
- Cotton Country Barn-Dist. #3Underground Storage Tanks · 1400 ft
- Cotton County District #3Underground Storage Tanks · 1400 ft
- Big Pasture Food MartUnderground Storage Tanks · 0.5 mi
- Big Pasture SchoolUnderground Storage Tanks · 0.5 mi
- Former Johnnie's CornerUnderground Storage Tanks · 2.1 mi
- Randlett Northwest-1Mining · 3.3 mi
- Randlett Northeast-4Mining · 3.4 mi
- Comanche Nation Travel PlazaUnderground Storage Tanks · 3.6 mi
- Matthews ProspectMining · 3.8 mi
- Randlett Northeast-3Mining · 4.0 mi
- Randlett Northeast-2Mining · 4.2 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Randlett'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 Randlett.
Total Sites
57
within ~10 miles of Randlett
Risk Level
Moderate
Highest-severity
1 Toxics Release Inventory facility
Sources Checked
within ~10 miles of Randlett
Severity Distribution
within ~10 miles of Randlett
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Randlett, two things run higher than the national average within ~10 miles of Randlett — Mining (12 sites) and Underground Storage Tanks (36 sites). Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
Mining: Mining sites — both historic and active — can leach heavy metals (arsenic, lead, cadmium, mercury) into soil and water for centuries after operations cease.
Underground Storage Tanks: Underground storage tanks are the single most common source of soil contamination near homes and gardens.
Test soil for heavy metals (lead, arsenic, cadmium, mercury) — this is essential near any mining site.
Use raised beds with imported soil — this eliminates the primary soil-contact pathway.
Check your specific parcel in Randlett
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 Randlett average
Your land is one point inside Randlett
Everything above resolves to Randlett as a whole — one PHZM band and one 28°F frost record, read across 401 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 Randlett Average
Randlett Average
- ●USDA Zones 8a, averaged across Randlett
- ●One soil character for all of Randlett
- ●Frost dates read at Randlett's scale: Mar 12 to Nov 21
YOUR Parcel
- ✓Your exact zone, not Randlett's 8a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Randlett
Pull a site-specific report for your exact address in Randlett, Oklahoma — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Randlett averages can't show:
We read public map data around Randlett — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Randlett average
How we know this about Randlett
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 Randlett’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 Randlett
When does frost risk typically end in Randlett?
The last hard freeze (28°F) in Randlett typically lands around Mar 12, 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 2.
When is the first frost in Randlett?
The first hard freeze (28°F) in Randlett typically arrives around Nov 21, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 7, so the watching starts about Oct 22 — about 254 days after the spring freeze cleared.
How long is the growing season in Randlett?
Measured between 28°F hard freezes, Randlett sees about 254 frost-free days — roughly Mar 12 through Nov 21, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 2 to Nov 7, about 219 days.
Is the soil safe to grow vegetables in Randlett?
The federal record around Randlett shows 57 documented sites, mostly Underground Storage Tanks entries (36), 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 Randlett?
From about Oct 22 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 21 (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 21. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Randlett's scale — its 8a band and its 254-day season. Your yard writes its own version of Randlett'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 Randlett’s own scale
6 of the readings below were taken at Randlett's own scale — its own ~254-day season between 28°F freezes, the 401 acres it covers and 57 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Randlett's own USDA hardiness band, zones 8aUSDA PHZM 2023
- Randlett's own 28°F hard-freeze dates, about Mar 12 and Nov 21 and the ~254-day span between themNOAA 1991–2020 Climate Normals
- 57 documented contamination sites on the federal record near Randlett, the closest Underground Storage Tanks record about 0.2 miles out from the town centreFederal environmental registers
- Randlett's boundary and the 401 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8a and a ~254-day seasonGrowable Ground crop-matching engine
- The ecoregion at Randlett's own centroid, the Central Great PlainsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Randlett's 401 acres read through its county's SSURGO summaryfrom Cotton County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Cotton 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 Cotton County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Randlett's 401 acreswhy one lot differs from the next →
- Which side of Randlett you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 401 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 Randlett-wide figureread your own land →
More in Oklahoma
Wider growing context
What grows across OklahomaRandlett sits outside our named growing regions, so Oklahoma as a whole is its closest context here.
Nearby growing guides