Grant City, Missouri, sits in USDA hardiness zone 5b — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
On paper, cabbage, cranberry, lavender, and collard greens all suit these conditions — on the ground, soil, sun, and drainage make the final call.
Even in Grant 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 Grant 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 Grant City — soil, climate, flood, and parcel records. How we handle your address.
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Grant City — the short answer
Grant City, Missouri: USDA zone 5b, about 203 days between hard freezes, across 851 acres of town.
- 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 26
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~203
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 851 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 Grant City's average, not your lot's — a low corner or a tree line moves it. Against Grant City's 203-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Grant City
Each reading below is measured for Grant City itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredGrant City runs about 203 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
MeasuredGrant 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 Grant City is in
Grant City sits in the Central Irregular Plains — EPA Level III, inside the wider Great Plains. That is read at Grant City's own centroid rather than borrowed from Worth County.
What Grows in Grant City
Every plant below cleared Grant City's own zone 5b and its 203-day season. Each card opens that plant's Missouri profile. How we score.
Is it too late to plant in Grant City?
Almost never — the real question is what to plant next. 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 26 — 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 Grant City
Closest first, within ~10 miles of Grant City. Listing isn't leaking, and distance isn't exposure.
- AMOCOUnderground Storage Tanks · 350 ft
- SAVILLE SERVICEUnderground Storage Tanks · 550 ft
- CASEYS GENERAL STORE #1321Underground Storage Tanks · 1000 ft
- CASEYS GENERAL STORE #3074Underground Storage Tanks · 1100 ft
- WORTH COUNTY SCHOOL DISTRICT R-IIIUnderground Storage Tanks · 2100 ft
- GRANT CITY MAINT LOTUnderground Storage Tanks · 2500 ft
- T66N R31W 27 3Nitrate · 1.6 mi
- T66N R31W 27Nitrate · 1.6 mi
- T66N R31W 01BBB1Nitrate · 5.6 mi
- T66N R30W 27ACB1Nitrate · 6.8 mi
- STANDARD SERVICE BILLY G JONESUnderground Storage Tanks · 7.6 mi
- T66N R30W 27CDD1Nitrate · 7.7 mi
4 more sites are on the record inside the same radius. See them on the map
Measured from Grant 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 Grant City.
Total Sites
22
within ~10 miles of Grant City
Risk Level
Low
Highest-severity
1 concentrated animal feeding operation
Sources Checked
within ~10 miles of Grant City
Severity Distribution
within ~10 miles of Grant City
Highest-Severity Sites
Know Before You Grow
- •On a private well, test for nitrates: above 10 mg/L the water needs treatment before irrigating.
- •Underground tanks leak petroleum as they age — near a former filling station, test the soil.
- •Large animal operations push nitrates and bacteria downstream. Below one, test your water.
Check your specific parcel in Grant 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 Grant City average
Your land is one point inside Grant City
Everything above resolves to Grant City as a whole — one PHZM band and one 28°F frost record, read across 851 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 Grant City Average
Grant City Average
- ●USDA Zones 5b, averaged across Grant City
- ●One soil character for all of Grant City
- ●Frost dates read at Grant City's scale: Apr 6 to Oct 26
YOUR Parcel
- ✓Your exact zone, not Grant City's 5b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Grant City
Pull a site-specific report for your exact address in Grant City, Missouri — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Grant City averages can't show:
We read public map data around Grant City — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Grant City average
How we know this about Grant City
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 Grant 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 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 Grant City
When does frost risk typically end in Grant City?
The last hard freeze (28°F) in Grant 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 Grant City?
The first hard freeze (28°F) in Grant City typically arrives around Oct 26, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 12, so the watching starts about Sep 26 — about 203 days after the spring freeze cleared.
How long is the growing season in Grant City?
Measured between 28°F hard freezes, Grant City sees about 203 frost-free days — roughly Apr 6 through Oct 26, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 27 to Oct 12, about 168 days.
Is the soil safe to grow vegetables in Grant City?
The federal record around Grant City is light — 22 documented sites across the 9 federal source types we checked, mostly Nitrate 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 Grant City?
From about Sep 26 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 26 (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 26. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Grant City's scale — its 5b band and its 203-day season. Your yard writes its own version of Grant 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 Grant City’s own scale
6 of the readings below were taken at Grant City's own scale — its own ~203-day season between 28°F freezes, the 851 acres it covers and 22 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Grant City's own USDA hardiness band, zones 5bUSDA PHZM 2023
- Grant City's own 28°F hard-freeze dates, about Apr 6 and Oct 26 and the ~203-day span between themNOAA 1991–2020 Climate Normals
- 22 documented contamination sites on the federal record near Grant City, the closest Underground Storage Tanks record under a tenth of a mile out from the town centreFederal environmental registers
- Grant City's boundary and the 851 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 5b and a ~203-day seasonGrowable Ground crop-matching engine
- The ecoregion at Grant 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 Grant City's 851 acres read through its county's SSURGO summaryfrom Worth County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Worth 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 Worth County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Grant City's 851 acreswhy one lot differs from the next →
- Which side of Grant 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 851 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 Grant City-wide figureread your own land →