Jerseyville, Illinois, sits in USDA hardiness zone 6b — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
A short list that earns its place here — cabbage, hazelnut, lavender, and collard greens — with any one site's soil, sun, and drainage making the final cut.
Even in Jerseyville, 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 Jerseyville 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 Jerseyville — soil, climate, flood, and parcel records. How we handle your address.
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Jerseyville — the short answer
Jerseyville, Illinois: USDA zone 6b, about 214 days between hard freezes, across 3K acres of city.
- USDA zone
- 6b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 31
- 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
- ~214
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 3K 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 Jerseyville's average, not your lot's — a low corner or a tree line moves it. Against Jerseyville's 214-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Jerseyville
Each reading below is measured for Jerseyville itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredJerseyville runs about 214 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
MeasuredJerseyville 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 Jerseyville is in
Jerseyville sits in the Interior River Valleys and Hills — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Jerseyville's own centroid rather than borrowed from Jersey County.
What Grows in Jerseyville
Every plant below cleared Jerseyville's own zone 6b and its 214-day season. Each card opens that plant's Illinois profile. How we score.
Is it too late to plant in Jerseyville?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Mar 3; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 31 (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. Here the season winds down slowly: late sowings, a real autumn harvest, and garlic in the ground before the first hard freeze.
Documented around Jerseyville
Survey cells within 31 miles of Jerseyville checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 216 miles off. What to watch for.
What's on the federal record near Jerseyville
Closest first, within ~10 miles of Jerseyville. Listing isn't leaking, and distance isn't exposure.
- Jerseyville Retail Associates, LLCUnderground Storage Tanks · 200 ft
- Krause & Son IncUnderground Storage Tanks · 200 ft
- JERSEYVILLE MOTORMARTBrownfields · 200 ft
- GTE Jerseyville LocationUnderground Storage Tanks · 250 ft
- Jerseyville Moto MartUnderground Storage Tanks · 250 ft
- TOWN & COUNTRY CLEANERSBrownfields · 500 ft
- SWEARINGIN SVC INCBrownfields · 600 ft
- Ronald SwearingenUnderground Storage Tanks · 600 ft
- BEIERMANN BUICK PONTIAC INCBrownfields · 800 ft
- Jersey CountyUnderground Storage Tanks · 950 ft
- Jersey Calhoun Veterinary ClincUnderground Storage Tanks · 1000 ft
- Jersey Township Rd DistUnderground Storage Tanks · 1000 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Jerseyville'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 Jerseyville.
Total Sites
69
within ~10 miles of Jerseyville
Risk Level
Moderate
Highest-severity
1 Toxics Release Inventory facility
Sources Checked
within ~10 miles of Jerseyville
Severity Distribution
within ~10 miles of Jerseyville
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Jerseyville, Underground Storage Tanks runs higher than the national average — 48 sites within ~10 miles of Jerseyville. Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
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 Jerseyville
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 Jerseyville average
Your land is one point inside Jerseyville
Everything above resolves to Jerseyville as a whole — one PHZM band and one 28°F frost record, read across 3K 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 Jerseyville Average
Jerseyville Average
- ●USDA Zones 6b, averaged across Jerseyville
- ●One soil character for all of Jerseyville
- ●Frost dates read at Jerseyville's scale: Mar 31 to Oct 31
YOUR Parcel
- ✓Your exact zone, not Jerseyville's 6b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Jerseyville
Pull a site-specific report for your exact address in Jerseyville, Illinois — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Jerseyville averages can't show:
We read public map data around Jerseyville — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Jerseyville average
How we know this about Jerseyville
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 Jerseyville’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 Jerseyville
When does frost risk typically end in Jerseyville?
The last hard freeze (28°F) in Jerseyville typically lands around Mar 31, 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 21.
When is the first frost in Jerseyville?
The first hard freeze (28°F) in Jerseyville 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 214 days after the spring freeze cleared.
How long is the growing season in Jerseyville?
Measured between 28°F hard freezes, Jerseyville sees about 214 frost-free days — roughly Mar 31 through Oct 31, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 21 to Oct 17, about 179 days.
Is the soil safe to grow vegetables in Jerseyville?
The federal record around Jerseyville shows 69 documented sites, mostly Underground Storage Tanks entries (48), the nearest Underground Storage Tanks record under a tenth of a mile 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 Jerseyville?
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 Jerseyville's scale — its 6b band and its 214-day season. Your yard writes its own version of Jerseyville'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 Jerseyville’s own scale
7 of the readings below were taken at Jerseyville's own scale — its own ~214-day season between 28°F freezes, the 3,352 acres it covers and 69 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Jerseyville's own USDA hardiness band, zones 6bUSDA PHZM 2023
- Jerseyville's own 28°F hard-freeze dates, about Mar 31 and Oct 31 and the ~214-day span between themNOAA 1991–2020 Climate Normals
- 69 documented contamination sites on the federal record near Jerseyville, the closest Underground Storage Tanks record under a tenth of a mile out from the town centreFederal environmental registers
- Jerseyville's boundary and the 3,352 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6b and a ~214-day seasonGrowable Ground crop-matching engine
- The ecoregion at Jerseyville's own centroid, the Interior River Valleys and HillsUS EPA Level III Ecoregions
- Lanternfly survey cells around Jerseyville 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 Jerseyville's 3,352 acres read through its county's SSURGO summaryfrom Jersey County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Jersey 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 Jersey County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Jerseyville's 3,352 acreswhy one lot differs from the next →
- Which side of Jerseyville you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 3,352 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 Jerseyville-wide figureread your own land →
More in Illinois
Wider growing context
What grows across IllinoisJerseyville sits outside our named growing regions, so Illinois as a whole is its closest context here.
Nearby growing guides