Brussels, Illinois, sits in USDA hardiness zone 6b — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
The conditions favor cabbage, hazelnut, lavender, and collard greens, among others — though every individual site edits that list with its own soil, sun, and drainage.
Even in Brussels, 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 Brussels 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 Brussels — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Brussels — the short answer
Brussels, Illinois: USDA zone 6b, about 228 days between hard freezes, across 358 acres of town.
- USDA zone
- 6b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 26
- 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
- ~228
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 358 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 Brussels's average, not your lot's — a low corner or a tree line moves it. Against Brussels's 228-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Brussels
Each reading below is measured for Brussels itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredBrussels runs about 228 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
MeasuredBrussels 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 Brussels is in
Brussels sits in the Interior River Valleys and Hills — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Brussels's own centroid rather than borrowed from Calhoun County.
What Grows in Brussels
Every plant below cleared Brussels's own zone 6b and its 228-day season. Each card opens that plant's Illinois profile. How we score.
Is it too late to plant in Brussels?
Rarely: the season closes in stages, not all at once, and each stage has its crops. Cool-season crops can go in from around Feb 26; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 26 (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. There is slack in a calendar like this — late plantings, second rounds of favorites, and a fall bench that keeps beds working.
Documented around Brussels
Survey cells within 31 miles of Brussels checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 233 miles off. What to watch for.
What's on the federal record near Brussels
Closest first, within ~10 miles of Brussels. Listing isn't leaking, and distance isn't exposure.
- Dahlbert William & BarbaraUnderground Storage Tanks · 750 ft
- Us Fish & Wildlife Ser CalhounUnderground Storage Tanks · 750 ft
- Geisler Energy IncUnderground Storage Tanks · 750 ft
- Pere Marquette HarborUnderground Storage Tanks · 2.9 mi
- PERE MARQUETTE STATE PARK - STPBrownfields · 4.5 mi
- Haugs StoreUnderground Storage Tanks · 4.7 mi
- Golden Eagle QuarryUnderground Storage Tanks · 4.7 mi
- JOHNS BOAT HARBORUnderground Storage Tanks · 5.2 mi
- IDOT BRUSSELS FERRY 836Brownfields · 5.2 mi
- T48N R03E 16BDNitrate · 5.5 mi
- T47N R03E 01AAB1Nitrate · 5.8 mi
- LAKE CENTER MARINAUnderground Storage Tanks · 5.9 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Brussels'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 Brussels.
Total Sites
135
within ~10 miles of Brussels
Risk Level
Elevated
Highest-severity
1 Superfund site (none NPL-listed)
Sources Checked
within ~10 miles of Brussels
Severity Distribution
within ~10 miles of Brussels
A note from Gnorman
What an experienced grower watches for around here
In and around Brussels, Toxics Release Inventory runs higher than the national average — 10 sites within ~10 miles of Brussels. Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Check your specific parcel in Brussels
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 Brussels average
Your land is one point inside Brussels
Everything above resolves to Brussels as a whole — one PHZM band and one 28°F frost record, read across 358 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 Brussels Average
Brussels Average
- ●USDA Zones 6b, averaged across Brussels
- ●One soil character for all of Brussels
- ●Frost dates read at Brussels's scale: Mar 26 to Nov 9
YOUR Parcel
- ✓Your exact zone, not Brussels's 6b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Brussels
Pull a site-specific report for your exact address in Brussels, Illinois — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Brussels averages can't show:
We read public map data around Brussels — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Brussels average
How we know this about Brussels
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 Brussels’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 Brussels
When does frost risk typically end in Brussels?
The last hard freeze (28°F) in Brussels typically lands around Mar 26, 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 16.
When is the first frost in Brussels?
The first hard freeze (28°F) in Brussels 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 228 days after the spring freeze cleared.
How long is the growing season in Brussels?
Measured between 28°F hard freezes, Brussels sees about 228 frost-free days — roughly Mar 26 through Nov 9, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 16 to Oct 26, about 193 days.
Is the soil safe to grow vegetables in Brussels?
The federal record around Brussels is a meaningful one — 135 documented sites, mostly Underground Storage Tanks entries (58), the nearest Underground Storage Tanks record about 0.1 miles out — so a soil test before new food beds is a sensible precaution here, not a reason to hold back from growing. Remember that proximity to a documented site is information, not a diagnosis of any one yard; the contamination map shows exactly what sits where.
How do I protect my plants from frost in Brussels?
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 Brussels's scale — its 6b band and its 228-day season. Your yard writes its own version of Brussels'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 Brussels’s own scale
7 of the readings below were taken at Brussels's own scale — its own ~228-day season between 28°F freezes, the 358 acres it covers and 135 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Brussels's own USDA hardiness band, zones 6bUSDA PHZM 2023
- Brussels's own 28°F hard-freeze dates, about Mar 26 and Nov 9 and the ~228-day span between themNOAA 1991–2020 Climate Normals
- 135 documented contamination sites on the federal record near Brussels, the closest Underground Storage Tanks record about 0.1 miles out from the town centreFederal environmental registers
- Brussels's boundary and the 358 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6b and a ~228-day seasonGrowable Ground crop-matching engine
- The ecoregion at Brussels's own centroid, the Interior River Valleys and HillsUS EPA Level III Ecoregions
- Lanternfly survey cells around Brussels checked, none carrying a detectionlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Brussels's 358 acres read through its county's SSURGO summaryfrom Calhoun County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Calhoun 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 Calhoun County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Brussels's 358 acreswhy one lot differs from the next →
- Which side of Brussels you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 358 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 Brussels-wide figureread your own land →
More in Illinois
Wider growing context
What grows across IllinoisBrussels sits outside our named growing regions, so Illinois as a whole is its closest context here.
Nearby growing guides