Belle Prairie City, Illinois, 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 Belle Prairie 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 Belle Prairie 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 Belle Prairie City — soil, climate, flood, and parcel records. How we handle your address.
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Belle Prairie City — the short answer
Belle Prairie City, Illinois: USDA zone 6b, about 221 days between hard freezes, across 280 acres of town.
- USDA zone
- 6b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 28
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 4
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~221
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 280 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 Belle Prairie City's average, not your lot's — a low corner or a tree line moves it. Against Belle Prairie City's 221-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Belle Prairie City
Each reading below is measured for Belle Prairie City itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredBelle Prairie City runs about 221 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
MeasuredBelle Prairie City 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 Belle Prairie City is in
Belle Prairie City sits in the Interior River Valleys and Hills — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Belle Prairie City's own centroid rather than borrowed from Hamilton County.
What Grows in Belle Prairie City
Every plant below cleared Belle Prairie City's own zone 6b and its 221-day season. Each card opens that plant's Illinois profile. How we score.
Is it too late to plant in Belle Prairie City?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Feb 28; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 28 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 4 — 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 Belle Prairie City
Closest first, within ~10 miles of Belle Prairie City. Listing isn't leaking, and distance isn't exposure.
- Dalghren StationUnderground Storage Tanks · 1.0 mi
- L & L SWINE - MCLEANSBOROCAFO · 2.9 mi
- McCormick, WandaUnderground Storage Tanks · 3.1 mi
- SYDENSTRICKER NOBBE PARTNERSBrownfields · 3.3 mi
- HAMILTON COUNTY WATER DISTRICTPFAS · 5.6 mi
- Hamilton County Highway DeptUnderground Storage Tanks · 5.6 mi
- ATLAS POWDER CO.Toxics Release Inventory · 5.6 mi
- Wolf Ser StaUnderground Storage Tanks · 5.8 mi
- Karcher ServUnderground Storage Tanks · 6.1 mi
- Stoltz LloydUnderground Storage Tanks · 6.1 mi
- Hamson's Trading PostUnderground Storage Tanks · 6.6 mi
- Irwin WillienUnderground Storage Tanks · 7.2 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Belle Prairie 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 Belle Prairie City.
Total Sites
60
within ~10 miles of Belle Prairie City
Risk Level
Moderate
Highest-severity
2 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of Belle Prairie City
Severity Distribution
within ~10 miles of Belle Prairie City
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Belle Prairie City, Underground Storage Tanks runs higher than the national average — 49 sites within ~10 miles of Belle Prairie City. That's not a problem with your land — it's information about 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 Belle Prairie 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 Belle Prairie City average
Your land is one point inside Belle Prairie City
Everything above resolves to Belle Prairie City as a whole — one PHZM band and one 28°F frost record, read across 280 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 Belle Prairie City Average
Belle Prairie City Average
- ●USDA Zones 6b, averaged across Belle Prairie City
- ●One soil character for all of Belle Prairie City
- ●Frost dates read at Belle Prairie City's scale: Mar 28 to Nov 4
YOUR Parcel
- ✓Your exact zone, not Belle Prairie City's 6b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Belle Prairie City
Pull a site-specific report for your exact address in Belle Prairie City, Illinois — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Belle Prairie City averages can't show:
We read public map data around Belle Prairie City — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Belle Prairie City average
How we know this about Belle Prairie 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 Belle Prairie 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 Belle Prairie City
When does frost risk typically end in Belle Prairie City?
The last hard freeze (28°F) in Belle Prairie City typically lands around Mar 28, 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 18.
When is the first frost in Belle Prairie City?
The first hard freeze (28°F) in Belle Prairie City typically arrives around Nov 4, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 21, so the watching starts about Oct 5 — about 221 days after the spring freeze cleared.
How long is the growing season in Belle Prairie City?
Measured between 28°F hard freezes, Belle Prairie City sees about 221 frost-free days — roughly Mar 28 through Nov 4, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 18 to Oct 21, about 186 days.
Is the soil safe to grow vegetables in Belle Prairie City?
The federal record around Belle Prairie City shows 60 documented sites, mostly Underground Storage Tanks entries (49), the nearest Underground Storage Tanks record about 1.0 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 Belle Prairie City?
From about Oct 5 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 4 (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 4. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Belle Prairie City's scale — its 6b band and its 221-day season. Your yard writes its own version of Belle Prairie 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 Belle Prairie City’s own scale
6 of the readings below were taken at Belle Prairie City's own scale — its own ~221-day season between 28°F freezes, the 280 acres it covers and 60 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Belle Prairie City's own USDA hardiness band, zones 6bUSDA PHZM 2023
- Belle Prairie City's own 28°F hard-freeze dates, about Mar 28 and Nov 4 and the ~221-day span between themNOAA 1991–2020 Climate Normals
- 60 documented contamination sites on the federal record near Belle Prairie City, the closest Underground Storage Tanks record about 1.0 miles out from the town centreFederal environmental registers
- Belle Prairie City's boundary and the 280 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6b and a ~221-day seasonGrowable Ground crop-matching engine
- The ecoregion at Belle Prairie City's own centroid, the Interior River Valleys and HillsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Belle Prairie City's 280 acres read through its county's SSURGO summaryfrom Hamilton County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Hamilton County
- The growing challenges every Illinois grower plans around — written at state scale, so they stay on the state guidefrom Illinois
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Hamilton County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Belle Prairie City's 280 acreswhy one lot differs from the next →
- Which side of Belle Prairie 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 280 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 1.0 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 Belle Prairie City-wide figureread your own land →
More in Illinois
Wider growing context
What grows across IllinoisBelle Prairie City sits outside our named growing regions, so Illinois as a whole is its closest context here.
Nearby growing guides