Millersburg, Kentucky, 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 Millersburg, 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 Millersburg 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 Millersburg — soil, climate, flood, and parcel records. How we handle your address.
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Millersburg — the short answer
Millersburg, Kentucky: USDA zone 6b, about 220 days between hard freezes, across 262 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)
- Nov 6
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~220
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 262 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 Millersburg's average, not your lot's — a low corner or a tree line moves it. Against Millersburg's 220-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Millersburg
Each reading below is measured for Millersburg itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredMillersburg runs about 220 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
MeasuredMillersburg 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 Millersburg is in
Millersburg sits in the Interior Plateau — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Millersburg's own centroid rather than borrowed from Bourbon County.
What Grows in Millersburg
Every plant below cleared Millersburg's own zone 6b and its 220-day season. Each card opens that plant's Kentucky profile. How we score.
Is it too late to plant in Millersburg?
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 Nov 6 — 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 Millersburg
Survey cells within 31 miles of Millersburg checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 47 miles off. What to watch for.
What's on the federal record near Millersburg
Closest first, within ~10 miles of Millersburg. Listing isn't leaking, and distance isn't exposure.
- Former Millersburg Elementary SchoolUnderground Storage Tanks · 650 ft
- Clarks Gas & GroceryUnderground Storage Tanks · 950 ft
- Paris Co Glc-52273Underground Storage Tanks · 1600 ft
- Stones BPUnderground Storage Tanks · 1700 ft
- 1st Stop Inc Of MillersburgUnderground Storage Tanks · 1700 ft
- JOY MINING MACHINERYToxics Release Inventory · 2200 ft
- William H FergusonUnderground Storage Tanks · 2400 ft
- MURRAY EQUIPMENT & MACHINE, INC.Toxics Release Inventory · 2400 ft
- Mary Lou Rankin PropertyUnderground Storage Tanks · 0.5 mi
- 76 Food MartUnderground Storage Tanks · 0.5 mi
- Pine Crest FarmUnderground Storage Tanks · 1.4 mi
- El Arrowhead FarmUnderground Storage Tanks · 1.7 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Millersburg'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 Millersburg.
Total Sites
149
within ~10 miles of Millersburg
Risk Level
Elevated
Highest-severity
1 Superfund site (none NPL-listed)
Sources Checked
within ~10 miles of Millersburg
Severity Distribution
within ~10 miles of Millersburg
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Millersburg, two things run higher than the national average within ~10 miles of Millersburg — Toxics Release Inventory (13 sites) and Underground Storage Tanks (109 sites). That's not a problem with your land — it's information about it.
Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.
Underground Storage Tanks: Underground storage tanks are the single most common source of soil contamination near homes and gardens.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Use raised beds with imported soil — this eliminates the primary soil-contact pathway.
Check your specific parcel in Millersburg
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 Millersburg average
Your land is one point inside Millersburg
Everything above resolves to Millersburg as a whole — one PHZM band and one 28°F frost record, read across 262 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 Millersburg Average
Millersburg Average
- ●USDA Zones 6b, averaged across Millersburg
- ●One soil character for all of Millersburg
- ●Frost dates read at Millersburg's scale: Mar 31 to Nov 6
YOUR Parcel
- ✓Your exact zone, not Millersburg's 6b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Millersburg
Pull a site-specific report for your exact address in Millersburg, Kentucky — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Millersburg averages can't show:
We read public map data around Millersburg — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Millersburg average
How we know this about Millersburg
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 Millersburg’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 Millersburg
When does frost risk typically end in Millersburg?
The last hard freeze (28°F) in Millersburg 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 Millersburg?
The first hard freeze (28°F) in Millersburg typically arrives around Nov 6, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 23, so the watching starts about Oct 7 — about 220 days after the spring freeze cleared.
How long is the growing season in Millersburg?
Measured between 28°F hard freezes, Millersburg sees about 220 frost-free days — roughly Mar 31 through Nov 6, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 21 to Oct 23, about 185 days.
Is the soil safe to grow vegetables in Millersburg?
The federal record around Millersburg is a meaningful one — 149 documented sites, mostly Underground Storage Tanks entries (109), 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 Millersburg?
From about Oct 7 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 6 (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 6. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Millersburg's scale — its 6b band and its 220-day season. Your yard writes its own version of Millersburg'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 Millersburg’s own scale
7 of the readings below were taken at Millersburg's own scale — its own ~220-day season between 28°F freezes, the 262 acres it covers and 149 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Millersburg's own USDA hardiness band, zones 6bUSDA PHZM 2023
- Millersburg's own 28°F hard-freeze dates, about Mar 31 and Nov 6 and the ~220-day span between themNOAA 1991–2020 Climate Normals
- 149 documented contamination sites on the federal record near Millersburg, the closest Underground Storage Tanks record about 0.1 miles out from the town centreFederal environmental registers
- Millersburg's boundary and the 262 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6b and a ~220-day seasonGrowable Ground crop-matching engine
- The ecoregion at Millersburg's own centroid, the Interior PlateauUS EPA Level III Ecoregions
- Lanternfly survey cells around Millersburg 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 Millersburg's 262 acres read through its county's SSURGO summaryfrom Bourbon County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Bourbon County
- The growing challenges every Kentucky grower plans around — written at state scale, so they stay on the state guidefrom Kentucky
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Bourbon County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Millersburg's 262 acreswhy one lot differs from the next →
- Which side of Millersburg you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 262 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 Millersburg-wide figureread your own land →
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