King City, Missouri, sits in USDA hardiness zone 5b — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
Expect cabbage, blueberry, lavender, and collard greens to be strong candidates here; the deciding factors on any one parcel stay local — soil, sun, and drainage.
Even in King City, 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 King City 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 King City — soil, climate, flood, and parcel records. How we handle your address.
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King City — the short answer
King City, Missouri: USDA zone 5b, about 208 days between hard freezes, across 884 acres of city.
- USDA zone
- 5b
- 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 31
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~208
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 884 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 5b is King City's average, not your lot's — a low corner or a tree line moves it. Against King City's 208-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in King City
Each reading below is measured for King City itself — here is what it means for a garden here, and the move an experienced grower makes about it.

Season length
MeasuredKing City runs about 208 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
MeasuredKing City sits in USDA hardiness zone 5b.
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 King City is in
King City sits in the Central Irregular Plains — EPA Level III, inside the wider Great Plains. That is read at King City's own centroid rather than borrowed from Gentry County.
What Grows in King City
Every plant below cleared King City's own zone 5b and its 208-day season. Each card opens that plant's Missouri profile. How we score.






























Is it too late to plant in King City?
Rarely: the season closes in stages, not all at once, and each stage has its crops. 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 31 — 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 King City
Closest first, within ~10 miles of King City. Listing isn't leaking, and distance isn't exposure.
- KING CITY OIL COUnderground Storage Tanks · 450 ft
- AALIM INCUnderground Storage Tanks · 550 ft
- MFA SERVICE STATIONUnderground Storage Tanks · 800 ft
- CASEYS GENERAL STORE #1059Underground Storage Tanks · 1100 ft
- RAY REDMAN JR (GRAYBEARDS CORNER)Underground Storage Tanks · 1200 ft
- WALTERS TIRES & SERVICEUnderground Storage Tanks · 1200 ft
- SUR-GRO PLANT FOOD, INCUnderground Storage Tanks · 0.8 mi
- KING CITY MAINT LOTUnderground Storage Tanks · 0.9 mi
- PINE VIEW PORKCAFO · 4.6 mi
- T61N R32W 03DDC1Nitrate · 5.0 mi
- T60N R32W 28DDC1Nitrate · 5.1 mi
- T60N R33W 34ABB1Nitrate · 5.9 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from King City'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 King City.
Total Sites
25
within ~10 miles of King City
Risk Level
Low
Highest-severity
2 concentrated animal feeding operations
Sources Checked
within ~10 miles of King City
Severity Distribution
within ~10 miles of King City
Highest-Severity Sites

A note from Gnorman
What an experienced grower watches for around here
In and around King City, Nitrate runs higher than the national average — 10 sites within ~10 miles of King City. 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 King City
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 King City average
Your land is one point inside King City
Everything above resolves to King City as a whole — one PHZM band and one 28°F frost record, read across 884 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 King City Average
King City Average
- ●USDA Zones 5b, averaged across King City
- ●One soil character for all of King City
- ●Frost dates read at King City's scale: Apr 6 to Oct 31
YOUR Parcel
- ✓Your exact zone, not King City's 5b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in King City
Pull a site-specific report for your exact address in King City, Missouri — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that King City averages can't show:
We read public map data around King City — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the King City average
How we know this about King City
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 King City’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 King City
When does frost risk typically end in King City?
The last hard freeze (28°F) in King City 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 King City?
The first hard freeze (28°F) in King City typically arrives around Oct 31, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 17, so the watching starts about Oct 1 — about 208 days after the spring freeze cleared.
How long is the growing season in King City?
Measured between 28°F hard freezes, King City sees about 208 frost-free days — roughly Apr 6 through Oct 31, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 27 to Oct 17, about 173 days.
Is the soil safe to grow vegetables in King City?
The federal record around King City is light — 25 documented sites across the 9 federal source types we checked, mostly Underground Storage Tanks entries (12), the nearest Underground Storage Tanks record under a tenth of a mile out — and proximity to a documented site is information, not a diagnosis of any one yard. Growing food here starts from a strong position; a soil test before new food beds settles any site-specific question.
How do I protect my plants from frost in King City?
From about Oct 1 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 31 (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 31. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at King City's scale — its 5b band and its 208-day season. Your yard writes its own version of King City'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 King City’s own scale
6 of the readings below were taken at King City's own scale — its own ~208-day season between 28°F freezes, the 884 acres it covers and 25 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- King City's own USDA hardiness band, zones 5bUSDA PHZM 2023
- King City's own 28°F hard-freeze dates, about Apr 6 and Oct 31 and the ~208-day span between themNOAA 1991–2020 Climate Normals
- 25 documented contamination sites on the federal record near King City, the closest Underground Storage Tanks record under a tenth of a mile out from the town centreFederal environmental registers
- King City's boundary and the 884 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 5b and a ~208-day seasonGrowable Ground crop-matching engine
- The ecoregion at King City's own centroid, the Central Irregular PlainsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so King City's 884 acres read through its county's SSURGO summaryfrom Gentry County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Gentry County
- The growing challenges every Missouri grower plans around — written at state scale, so they stay on the state guidefrom Missouri
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Gentry County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among King City's 884 acreswhy one lot differs from the next →
- Which side of King City you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 884 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 King City-wide figureread your own land →
