Campbell Hill, Illinois, sits in USDA hardiness zone 7a — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
Among the crops suited to this profile: cabbage, hazelnut, california poppy, and collard greens. The site-level story — soil, sun, drainage — decides the rest.
Even in Campbell Hill, 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 Campbell Hill 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 Campbell Hill — soil, climate, flood, and parcel records. How we handle your address.
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Campbell Hill — the short answer
Campbell Hill, Illinois: USDA zone 7a, about 229 days between hard freezes, across 296 acres of town.
- USDA zone
- 7a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 25
- 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
- ~229
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 296 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 7a is Campbell Hill's average, not your lot's — a low corner or a tree line moves it. Against Campbell Hill's 229-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Campbell Hill
Each reading below is measured for Campbell Hill itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredCampbell Hill runs about 229 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
MeasuredCampbell Hill sits in USDA hardiness zone 7a.
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 Campbell Hill is in
Campbell Hill sits in the Interior River Valleys and Hills — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Campbell Hill's own centroid rather than borrowed from Jackson County.
What Grows in Campbell Hill
Every plant below cleared Campbell Hill's own zone 7a and its 229-day season. Each card opens that plant's Illinois profile. How we score.
Is it too late to plant in Campbell Hill?
For most of the year, no — what changes is which crops still fit the days remaining. Cool-season crops can go in from around Feb 25; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 25 (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.
What's on the federal record near Campbell Hill
Closest first, within ~10 miles of Campbell Hill. Listing isn't leaking, and distance isn't exposure.
- Curt Tow ServiceUnderground Storage Tanks · 650 ft
- The CupboardUnderground Storage Tanks · 800 ft
- Trico Comm Unit School Dist 176Underground Storage Tanks · 1.5 mi
- WASHINGTON COUNTY WATER COMPANYPFAS · 1.7 mi
- Fleetwoods General Stores, Inc.Underground Storage Tanks · 3.8 mi
- Old Mobil StationUnderground Storage Tanks · 3.9 mi
- Southern FS Inc - AvaUnderground Storage Tanks · 3.9 mi
- Fleetwoods General Stores of WillisvilleUnderground Storage Tanks · 4.0 mi
- Rons Standard ServiceUnderground Storage Tanks · 4.0 mi
- Sharp Rock Falls Rec IncUnderground Storage Tanks · 4.1 mi
- Tom Renner StockfarmUnderground Storage Tanks · 4.1 mi
- Wrights ServiceUnderground Storage Tanks · 4.1 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Campbell Hill'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 Campbell Hill.
Total Sites
56
within ~10 miles of Campbell Hill
Risk Level
Moderate
Highest-severity
4 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of Campbell Hill
Severity Distribution
within ~10 miles of Campbell Hill
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Campbell Hill, two things run higher than the national average within ~10 miles of Campbell Hill — Underground Storage Tanks (45 sites) and Toxics Release Inventory (4 sites). 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.
Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.
Use raised beds with imported soil — this eliminates the primary soil-contact pathway.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Check your specific parcel in Campbell Hill
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 Campbell Hill average
Your land is one point inside Campbell Hill
Everything above resolves to Campbell Hill as a whole — one PHZM band and one 28°F frost record, read across 296 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 Campbell Hill Average
Campbell Hill Average
- ●USDA Zones 7a, averaged across Campbell Hill
- ●One soil character for all of Campbell Hill
- ●Frost dates read at Campbell Hill's scale: Mar 25 to Nov 9
YOUR Parcel
- ✓Your exact zone, not Campbell Hill's 7a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Campbell Hill
Pull a site-specific report for your exact address in Campbell Hill, Illinois — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Campbell Hill averages can't show:
We read public map data around Campbell Hill — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Campbell Hill average
How we know this about Campbell Hill
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 Campbell Hill’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 Campbell Hill
When does frost risk typically end in Campbell Hill?
The last hard freeze (28°F) in Campbell Hill typically lands around Mar 25, 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 15.
When is the first frost in Campbell Hill?
The first hard freeze (28°F) in Campbell Hill 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 229 days after the spring freeze cleared.
How long is the growing season in Campbell Hill?
Measured between 28°F hard freezes, Campbell Hill sees about 229 frost-free days — roughly Mar 25 through Nov 9, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 15 to Oct 26, about 194 days.
Is the soil safe to grow vegetables in Campbell Hill?
The federal record around Campbell Hill shows 56 documented sites, mostly Underground Storage Tanks entries (45), 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 Campbell Hill?
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 Campbell Hill's scale — its 7a band and its 229-day season. Your yard writes its own version of Campbell Hill'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 Campbell Hill’s own scale
6 of the readings below were taken at Campbell Hill's own scale — its own ~229-day season between 28°F freezes, the 296 acres it covers and 56 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Campbell Hill's own USDA hardiness band, zones 7aUSDA PHZM 2023
- Campbell Hill's own 28°F hard-freeze dates, about Mar 25 and Nov 9 and the ~229-day span between themNOAA 1991–2020 Climate Normals
- 56 documented contamination sites on the federal record near Campbell Hill, the closest Underground Storage Tanks record about 0.1 miles out from the town centreFederal environmental registers
- Campbell Hill's boundary and the 296 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7a and a ~229-day seasonGrowable Ground crop-matching engine
- The ecoregion at Campbell Hill'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 Campbell Hill's 296 acres read through its county's SSURGO summaryfrom Jackson County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Jackson 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 Jackson County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Campbell Hill's 296 acreswhy one lot differs from the next →
- Which side of Campbell Hill you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 296 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 Campbell Hill-wide figureread your own land →