Mullinville, Kansas, sits in USDA hardiness zone 6b — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
These conditions suit cabbage, hazelnut, lavender, and collard greens — a starting list any specific site will trim or extend with its own soil, sun, and drainage.
Even in Mullinville, 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 Mullinville 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 Mullinville — soil, climate, flood, and parcel records. How we handle your address.
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Mullinville — the short answer
Mullinville, Kansas: USDA zone 6b, about 207 days between hard freezes, across 410 acres of city.
- USDA zone
- 6b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 6
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 30
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~207
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 410 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 6b is Mullinville's average, not your lot's — a low corner or a tree line moves it. Against Mullinville's 207-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Mullinville
Each reading below is measured for Mullinville itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredMullinville runs about 207 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
MeasuredMullinville sits in USDA hardiness zone 6b.
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 Mullinville is in
Mullinville sits in the Central Great Plains — EPA Level III, inside the wider Great Plains. That is read at Mullinville's own centroid rather than borrowed from Kiowa County.
What Grows in Mullinville
Every plant below cleared Mullinville's own zone 6b and its 207-day season. Each card opens that plant's Kansas profile. How we score.
Is it too late to plant in Mullinville?
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 9; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 6 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 30 — long-season crops need about 90 days of runway, quick greens only 30. There is slack in a calendar like this — late plantings, second rounds of favorites, and a fall bench that keeps beds working.
What's on the federal record near Mullinville
Closest first, within ~10 miles of Mullinville. Listing isn't leaking, and distance isn't exposure.
- KIOWA CO. HIGHWAY-MAINTENCE SHUnderground Storage Tanks · 750 ft
- KENDALL'S COUNTRY STOREUnderground Storage Tanks · 900 ft
- USD #424Underground Storage Tanks · 1300 ft
- 28S 20W 23CDD 01Nitrate · 1900 ft
- NORTHERN NATURAL GAS COMPANYBrownfields · 2400 ft
- 54 TRUCK STOPUnderground Storage Tanks · 0.5 mi
- 28S 19W 31BBB 01Nitrate · 2.1 mi
- NORTHERN NATURAL GAS-M670B ILI PROJECTBrownfields · 2.2 mi
- 28S 20W 10ACAC01 COS-1226Nitrate · 2.6 mi
- NORTHERN NATURAL GAS-MULLINVILUnderground Storage Tanks · 3.3 mi
- 28S 19W 05CAA 01Nitrate · 4.2 mi
- 27S 20W 34ACC 01Nitrate · 4.3 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Mullinville'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 Mullinville.
Sources Checked
within ~10 miles of Mullinville
Severity Distribution
within ~10 miles of Mullinville
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Mullinville, Nitrate runs higher than the national average — 40 sites within ~10 miles of Mullinville. Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in Mullinville
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 Mullinville average
Your land is one point inside Mullinville
Everything above resolves to Mullinville as a whole — one PHZM band and one 28°F frost record, read across 410 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 Mullinville Average
Mullinville Average
- ●USDA Zones 6b, averaged across Mullinville
- ●One soil character for all of Mullinville
- ●Frost dates read at Mullinville's scale: Apr 6 to Oct 30
YOUR Parcel
- ✓Your exact zone, not Mullinville's 6b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Mullinville
Pull a site-specific report for your exact address in Mullinville, Kansas — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Mullinville averages can't show:
We read public map data around Mullinville — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Mullinville average
How we know this about Mullinville
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 Mullinville’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 Mullinville
When does frost risk typically end in Mullinville?
The last hard freeze (28°F) in Mullinville typically lands around Apr 6, 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 27.
When is the first frost in Mullinville?
The first hard freeze (28°F) in Mullinville typically arrives around Oct 30, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 16, so the watching starts about Sep 30 — about 207 days after the spring freeze cleared.
How long is the growing season in Mullinville?
Measured between 28°F hard freezes, Mullinville sees about 207 frost-free days — roughly Apr 6 through Oct 30, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 27 to Oct 16, about 172 days.
Is the soil safe to grow vegetables in Mullinville?
The federal record around Mullinville shows 71 documented sites, mostly Nitrate entries (40), the nearest Underground Storage Tanks record about 0.1 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 Mullinville?
From about Sep 30 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 Oct 30 (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 Oct 30. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Mullinville's scale — its 6b band and its 207-day season. Your yard writes its own version of Mullinville'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 Mullinville’s own scale
6 of the readings below were taken at Mullinville's own scale — its own ~207-day season between 28°F freezes, the 410 acres it covers and 71 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Mullinville's own USDA hardiness band, zones 6bUSDA PHZM 2023
- Mullinville's own 28°F hard-freeze dates, about Apr 6 and Oct 30 and the ~207-day span between themNOAA 1991–2020 Climate Normals
- 71 documented contamination sites on the federal record near Mullinville, the closest Underground Storage Tanks record about 0.1 miles out from the town centreFederal environmental registers
- Mullinville's boundary and the 410 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6b and a ~207-day seasonGrowable Ground crop-matching engine
- The ecoregion at Mullinville's own centroid, the Central Great PlainsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Mullinville's 410 acres read through its county's SSURGO summaryfrom Kiowa County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Kiowa County
- The growing challenges every Kansas grower plans around — written at state scale, so they stay on the state guidefrom Kansas
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Kiowa County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Mullinville's 410 acreswhy one lot differs from the next →
- Which side of Mullinville you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 410 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.1 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 Mullinville-wide figureread your own land →
More in Kansas
Wider growing context
What grows across KansasMullinville sits outside our named growing regions, so Kansas as a whole is its closest context here.
Nearby growing guides