Newkirk, Oklahoma, sits in USDA hardiness zone 7a — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
Among the crops suited to this profile: cabbage, hazelnut, california poppy, and collard greens. The site-level story — soil, sun, drainage — decides the rest.
Even in Newkirk, 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 Newkirk 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 Newkirk — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Newkirk — the short answer
Newkirk, Oklahoma: USDA zone 7a, about 224 days between hard freezes, across 867 acres of city.
- USDA zone
- 7a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 30
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 9
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~224
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 867 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 Newkirk's average, not your lot's — a low corner or a tree line moves it. Against Newkirk's 224-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Newkirk
Each reading below is measured for Newkirk itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredNewkirk runs about 224 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
MeasuredNewkirk 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 Newkirk is in
Newkirk sits in the Central Great Plains — EPA Level III, inside the wider Great Plains. That is read at Newkirk's own centroid rather than borrowed from Kay County.
What Grows in Newkirk
Every plant below cleared Newkirk's own zone 7a and its 224-day season. Each card opens that plant's Oklahoma profile. How we score.
Is it too late to plant in Newkirk?
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 2; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 30 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 9 — 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 Newkirk
Closest first, within ~10 miles of Newkirk. Listing isn't leaking, and distance isn't exposure.
- Lake Auto PartsUnderground Storage Tanks · 250 ft
- LOCKE AUTO PARTSBrownfields · 750 ft
- Newkirk Public SchoolUnderground Storage Tanks · 900 ft
- Brown BuildingUnderground Storage Tanks · 950 ft
- Two Rivers Coop NewkirkUnderground Storage Tanks · 1000 ft
- Old Chevrolet GarageUnderground Storage Tanks · 1100 ft
- Newkirk RailyardUnderground Storage Tanks · 1100 ft
- G & B Auto Service IncUnderground Storage Tanks · 1400 ft
- Glass Wholesale IncUnderground Storage Tanks · 1500 ft
- City Of Newkirk, OklahomaUnderground Storage Tanks · 1700 ft
- TRUCK & TRACTOR SERV INCBrownfields · 1700 ft
- Newpoint StoreUnderground Storage Tanks · 2200 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Newkirk'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 Newkirk.
Total Sites
52
within ~10 miles of Newkirk
Risk Level
Moderate
Highest-severity
3 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of Newkirk
Severity Distribution
within ~10 miles of Newkirk
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Newkirk, Underground Storage Tanks runs higher than the national average — 36 sites within ~10 miles of Newkirk. It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
Underground Storage Tanks: Underground storage tanks are the single most common source of soil contamination near homes and gardens.
Use raised beds with imported soil — this eliminates the primary soil-contact pathway.
Check your specific parcel in Newkirk
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 Newkirk average
Your land is one point inside Newkirk
Everything above resolves to Newkirk as a whole — one PHZM band and one 28°F frost record, read across 867 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 Newkirk Average
Newkirk Average
- ●USDA Zones 7a, averaged across Newkirk
- ●One soil character for all of Newkirk
- ●Frost dates read at Newkirk's scale: Mar 30 to Nov 9
YOUR Parcel
- ✓Your exact zone, not Newkirk's 7a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Newkirk
Pull a site-specific report for your exact address in Newkirk, Oklahoma — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Newkirk averages can't show:
We read public map data around Newkirk — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Newkirk average
How we know this about Newkirk
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 Newkirk’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 Newkirk
When does frost risk typically end in Newkirk?
The last hard freeze (28°F) in Newkirk typically lands around Mar 30, 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 20.
When is the first frost in Newkirk?
The first hard freeze (28°F) in Newkirk typically arrives around Nov 9, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 26, so the watching starts about Oct 10 — about 224 days after the spring freeze cleared.
How long is the growing season in Newkirk?
Measured between 28°F hard freezes, Newkirk sees about 224 frost-free days — roughly Mar 30 through Nov 9, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 20 to Oct 26, about 189 days.
Is the soil safe to grow vegetables in Newkirk?
The federal record around Newkirk shows 52 documented sites, mostly Underground Storage Tanks entries (36), the nearest Underground Storage Tanks record under a tenth of a mile 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 Newkirk?
From about Oct 10 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 9 (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 9. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Newkirk's scale — its 7a band and its 224-day season. Your yard writes its own version of Newkirk'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 Newkirk’s own scale
6 of the readings below were taken at Newkirk's own scale — its own ~224-day season between 28°F freezes, the 867 acres it covers and 52 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Newkirk's own USDA hardiness band, zones 7aUSDA PHZM 2023
- Newkirk's own 28°F hard-freeze dates, about Mar 30 and Nov 9 and the ~224-day span between themNOAA 1991–2020 Climate Normals
- 52 documented contamination sites on the federal record near Newkirk, the closest Underground Storage Tanks record under a tenth of a mile out from the town centreFederal environmental registers
- Newkirk's boundary and the 867 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7a and a ~224-day seasonGrowable Ground crop-matching engine
- The ecoregion at Newkirk's own centroid, the Central Great PlainsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Newkirk's 867 acres read through its county's SSURGO summaryfrom Kay County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Kay 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 Kay County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Newkirk's 867 acreswhy one lot differs from the next →
- Which side of Newkirk you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 867 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record under a tenth of a mile 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 Newkirk-wide figureread your own land →
More in Oklahoma
Wider growing context
What grows across OklahomaNewkirk sits outside our named growing regions, so Oklahoma as a whole is its closest context here.
Nearby growing guides