St. Louisville, Ohio, sits in USDA hardiness zone 6a — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
On paper, cabbage, hazelnut, lavender, and collard greens all suit these conditions — on the ground, soil, sun, and drainage make the final call.
Even in St. Louisville, 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 St. Louisville 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 St. Louisville — soil, climate, flood, and parcel records. How we handle your address.
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St. Louisville — the short answer
St. Louisville, Ohio: USDA zone 6a, about 196 days between hard freezes, across 162 acres of town.
- USDA zone
- 6a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 14
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 27
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~196
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 162 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 6a is St. Louisville's average, not your lot's — a low corner or a tree line moves it. Against St. Louisville's 196-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in St. Louisville
Each reading below is measured for St. Louisville itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredSt. Louisville runs about 196 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
MeasuredSt. Louisville sits in USDA hardiness zone 6a.
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 St. Louisville is in
St. Louisville sits in the Erie Drift Plain — EPA Level III, inside the wider Eastern Temperate Forests. That is read at St. Louisville's own centroid rather than borrowed from Licking County.
What Grows in St. Louisville
Every plant below cleared St. Louisville's own zone 6a and its 196-day season. Each card opens that plant's Ohio profile. How we score.
Is it too late to plant in St. Louisville?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Mar 17; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 14 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 27 — long-season crops need about 90 days of runway, quick greens only 30. Late in the year the fall bench takes over — quick greens, radishes, and garlic that repays you next summer.
Documented around St. Louisville
Spotted lanternfly documented 30 miles from St. Louisville, first recorded 2022. What to watch for.
What's on the federal record near St. Louisville
Closest first, within ~10 miles of St. Louisville. Listing isn't leaking, and distance isn't exposure.
- C. M. JOHNSON LUMBER, INC.Underground Storage Tanks · 900 ft
- DOOR RENEWBrownfields · 1000 ft
- VANWAY SAND & GRAVEL, INC.Underground Storage Tanks · 0.5 mi
- SCIOTO MATERIALS LLC ST. LOUISVILLE (0145000400)Brownfields · 0.9 mi
- LI-4 OHNitrate · 1.7 mi
- TARGET STORE T0989Brownfields · 3.7 mi
- NEWTON TOWNSHIPUnderground Storage Tanks · 3.9 mi
- DRY CREEK CONCRETEUnderground Storage Tanks · 4.2 mi
- RT 13 DUCHESSUnderground Storage Tanks · 4.4 mi
- UTICA DUCHESSUnderground Storage Tanks · 4.4 mi
- HOLOPHANE UTICA PLANTToxics Release Inventory · 4.4 mi
- CIRCLE K #5692Underground Storage Tanks · 4.4 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from St. Louisville'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 St. Louisville.
Total Sites
309
within ~10 miles of St. Louisville
Risk Level
Elevated
Highest-severity
8 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of St. Louisville
Severity Distribution
within ~10 miles of St. Louisville
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around St. Louisville, Superfund runs higher than the national average — 8 sites within ~10 miles of St. Louisville. It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
Superfund: Superfund sites represent the most severe contamination in the federal system.
Commission professional soil testing before any food production (test for heavy metals, VOCs, and SVOCs).
Check your specific parcel in St. Louisville
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 St. Louisville average
Your land is one point inside St. Louisville
Everything above resolves to St. Louisville as a whole — one PHZM band and one 28°F frost record, read across 162 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 St. Louisville Average
St. Louisville Average
- ●USDA Zones 6a, averaged across St. Louisville
- ●One soil character for all of St. Louisville
- ●Frost dates read at St. Louisville's scale: Apr 14 to Oct 27
YOUR Parcel
- ✓Your exact zone, not St. Louisville's 6a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in St. Louisville
Pull a site-specific report for your exact address in St. Louisville, Ohio — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that St. Louisville averages can't show:
We read public map data around St. Louisville — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the St. Louisville average
How we know this about St. Louisville
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 St. Louisville’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 St. Louisville
When does frost risk typically end in St. Louisville?
The last hard freeze (28°F) in St. Louisville typically lands around Apr 14, 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 5.
When is the first frost in St. Louisville?
The first hard freeze (28°F) in St. Louisville typically arrives around Oct 27, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 13, so the watching starts about Sep 27 — about 196 days after the spring freeze cleared.
How long is the growing season in St. Louisville?
Measured between 28°F hard freezes, St. Louisville sees about 196 frost-free days — roughly Apr 14 through Oct 27, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 5 to Oct 13, about 161 days.
Is the soil safe to grow vegetables in St. Louisville?
The federal record around St. Louisville is a meaningful one — 309 documented sites, mostly Underground Storage Tanks entries (165), the nearest Underground Storage Tanks record about 0.2 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 St. Louisville?
From about Sep 27 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 27 (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 27. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at St. Louisville's scale — its 6a band and its 196-day season. Your yard writes its own version of St. Louisville'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 St. Louisville’s own scale
7 of the readings below were taken at St. Louisville's own scale — its own ~196-day season between 28°F freezes, the 162 acres it covers and 309 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- St. Louisville's own USDA hardiness band, zones 6aUSDA PHZM 2023
- St. Louisville's own 28°F hard-freeze dates, about Apr 14 and Oct 27 and the ~196-day span between themNOAA 1991–2020 Climate Normals
- 309 documented contamination sites on the federal record near St. Louisville, the closest Underground Storage Tanks record about 0.2 miles out from the town centreFederal environmental registers
- St. Louisville's boundary and the 162 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6a and a ~196-day seasonGrowable Ground crop-matching engine
- The ecoregion at St. Louisville's own centroid, the Erie Drift PlainUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of St. Louisvillelydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so St. Louisville's 162 acres read through its county's SSURGO summaryfrom Licking County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Licking County
- The growing challenges every Ohio grower plans around — written at state scale, so they stay on the state guidefrom Ohio
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Licking County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among St. Louisville's 162 acreswhy one lot differs from the next →
- Which side of St. Louisville you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 162 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.2 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 St. Louisville-wide figureread your own land →
More in Ohio
Wider growing context
What grows across OhioSt. Louisville sits outside our named growing regions, so Ohio as a whole is its closest context here.
Nearby growing guides