Milledgeville, Illinois, sits in USDA hardiness zone 5a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
These conditions suit cabbage, cranberry, lavender, and collard greens — a starting list any specific site will trim or extend with its own soil, sun, and drainage.
Even in Milledgeville, 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 Milledgeville 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 Milledgeville — soil, climate, flood, and parcel records. How we handle your address.
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Milledgeville — the short answer
Milledgeville, Illinois: USDA zone 5a, about 192 days between hard freezes, across 442 acres of town.
- USDA zone
- 5a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 12
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 21
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~192
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 442 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 5a is Milledgeville's average, not your lot's — a low corner or a tree line moves it. Against Milledgeville's 192-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Milledgeville
Each reading below is measured for Milledgeville itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredMilledgeville runs about 192 days between hard freezes — a moderate growing season.
There is room for the full run of cool-season crops plus a warm-season main crop, but the calendar is tight enough that a late spring or early fall frost still decides how much finishes.
Time warm-season transplants to your last hard freeze, and a few weeks of season extension turns a near-miss harvest into a sure one.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredMilledgeville sits in USDA hardiness zone 5a.
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 Milledgeville is in
Milledgeville sits in the Central Corn Belt Plains — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Milledgeville's own centroid rather than borrowed from Carroll County.
What Grows in Milledgeville
Every plant below cleared Milledgeville's own zone 5a and its 192-day season. Each card opens that plant's Illinois profile. How we score.
Is it too late to plant in Milledgeville?
Too late for some crops, right on time for others — a growing season is a sequence, not a deadline. Cool-season crops can go in from around Mar 15; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 12 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 21 — long-season crops need about 90 days of runway, quick greens only 30. The tail of the season still works: sixty-day crops into late summer, quick greens after, garlic last of all.
What's on the federal record near Milledgeville
Closest first, within ~10 miles of Milledgeville. Listing isn't leaking, and distance isn't exposure.
- Kraft IncUnderground Storage Tanks · 350 ft
- Milledgeville Community SchoolUnderground Storage Tanks · 350 ft
- Terra International IncUnderground Storage Tanks · 350 ft
- Meyers & LitwillerUnderground Storage Tanks · 450 ft
- Burlington NorthernUnderground Storage Tanks · 450 ft
- Gibbs Dry WallUnderground Storage Tanks · 550 ft
- Former Zemke TruckingUnderground Storage Tanks · 700 ft
- Carroll Service Company F24Underground Storage Tanks · 1000 ft
- MILLEDGEVILLE HIGH SCHOOLBrownfields · 1100 ft
- Schmitt Motors PropertyUnderground Storage Tanks · 1700 ft
- Bushman SerUnderground Storage Tanks · 1800 ft
- Casey's General Store #1636Underground Storage Tanks · 1800 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Milledgeville'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 Milledgeville.
Total Sites
57
within ~10 miles of Milledgeville
Risk Level
Moderate
Highest-severity
4 concentrated animal feeding operations
Sources Checked
within ~10 miles of Milledgeville
Severity Distribution
within ~10 miles of Milledgeville
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Milledgeville, two things run higher than the national average within ~10 miles of Milledgeville — CAFO (4 sites) and Underground Storage Tanks (37 sites). Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
CAFO: CAFOs pose a different contamination profile than chemical sources.
Underground Storage Tanks: Underground storage tanks are the single most common source of soil contamination near homes and gardens.
Wash all produce consumed raw thoroughly, especially leafy greens grown near CAFOs.
Use raised beds with imported soil — this eliminates the primary soil-contact pathway.
Check your specific parcel in Milledgeville
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 Milledgeville average
Your land is one point inside Milledgeville
Everything above resolves to Milledgeville as a whole — one PHZM band and one 28°F frost record, read across 442 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 Milledgeville Average
Milledgeville Average
- ●USDA Zones 5a, averaged across Milledgeville
- ●One soil character for all of Milledgeville
- ●Frost dates read at Milledgeville's scale: Apr 12 to Oct 21
YOUR Parcel
- ✓Your exact zone, not Milledgeville's 5a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Milledgeville
Pull a site-specific report for your exact address in Milledgeville, Illinois — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Milledgeville averages can't show:
We read public map data around Milledgeville — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Milledgeville average
How we know this about Milledgeville
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 Milledgeville’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 Milledgeville
When does frost risk typically end in Milledgeville?
The last hard freeze (28°F) in Milledgeville typically lands around Apr 12, 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 May 3.
When is the first frost in Milledgeville?
The first hard freeze (28°F) in Milledgeville typically arrives around Oct 21, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 7, so the watching starts about Sep 21 — about 192 days after the spring freeze cleared.
How long is the growing season in Milledgeville?
Measured between 28°F hard freezes, Milledgeville sees about 192 frost-free days — roughly Apr 12 through Oct 21, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 3 to Oct 7, about 157 days.
Is the soil safe to grow vegetables in Milledgeville?
The federal record around Milledgeville shows 57 documented sites, mostly Underground Storage Tanks entries (37), 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 Milledgeville?
From about Sep 21 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 21 (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 21. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Milledgeville's scale — its 5a band and its 192-day season. Your yard writes its own version of Milledgeville'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 Milledgeville’s own scale
6 of the readings below were taken at Milledgeville's own scale — its own ~192-day season between 28°F freezes, the 442 acres it covers and 57 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Milledgeville's own USDA hardiness band, zones 5aUSDA PHZM 2023
- Milledgeville's own 28°F hard-freeze dates, about Apr 12 and Oct 21 and the ~192-day span between themNOAA 1991–2020 Climate Normals
- 57 documented contamination sites on the federal record near Milledgeville, the closest Underground Storage Tanks record under a tenth of a mile out from the town centreFederal environmental registers
- Milledgeville's boundary and the 442 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 5a and a ~192-day seasonGrowable Ground crop-matching engine
- The ecoregion at Milledgeville's own centroid, the Central Corn Belt PlainsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Milledgeville's 442 acres read through its county's SSURGO summaryfrom Carroll County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Carroll 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 Carroll County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Milledgeville's 442 acreswhy one lot differs from the next →
- Which side of Milledgeville you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 442 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 Milledgeville-wide figureread your own land →
More in Illinois
Wider growing context
What grows across IllinoisMilledgeville sits outside our named growing regions, so Illinois as a whole is its closest context here.