West Unity, Ohio, sits in USDA hardiness zone 6a — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
Crops well matched to these conditions include cabbage, hazelnut, lavender, and collard greens — though what thrives on any one site still turns on its specific soil, sun, and drainage.
Even in West Unity, 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 West Unity 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 West Unity — soil, climate, flood, and parcel records. How we handle your address.
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West Unity — the short answer
West Unity, Ohio: USDA zone 6a, about 196 days between hard freezes, across 985 acres of town.
- USDA zone
- 6a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 15
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 28
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~196
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 985 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 West Unity's average, not your lot's — a low corner or a tree line moves it. Against West Unity's 196-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in West Unity
Each reading below is measured for West Unity itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredWest Unity 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
MeasuredWest Unity 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 West Unity is in
West Unity sits in the Eastern Corn Belt Plains — EPA Level III, inside the wider Eastern Temperate Forests. That is read at West Unity's own centroid rather than borrowed from Williams County.
What Grows in West Unity
Every plant below cleared West Unity'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 West Unity?
For most of the year, no — what changes is which crops still fit the days remaining. Cool-season crops can go in from around Mar 18; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 15 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 28 — long-season crops need about 90 days of runway, quick greens only 30. Even past midsummer there is room for a true fall garden here, and garlic planted near the close carries the momentum into next year.
Documented around West Unity
Survey cells within 31 miles of West Unity checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 41 miles off. What to watch for.
What's on the federal record near West Unity
Closest first, within ~10 miles of West Unity. Listing isn't leaking, and distance isn't exposure.
- JONES AUTO SERVICEBrownfields · 700 ft
- DALE HORNUNG MARATHONUnderground Storage Tanks · 1200 ft
- AT&TUnderground Storage Tanks · 1200 ft
- DIELMAN, INC.Underground Storage Tanks · 1200 ft
- UNITY MAIN STOPUnderground Storage Tanks · 1200 ft
- DALE HORNUNGUnderground Storage Tanks · 1200 ft
- UNITY MINI MARTUnderground Storage Tanks · 1700 ft
- MILLCREEK WEST UNITY LOCAL SCHOOUnderground Storage Tanks · 1800 ft
- BDJ INDUSTRIES INC. (0386000060)Brownfields · 2300 ft
- TRINITY SPECIALTY COMPOUNDING INCBrownfields · 0.6 mi
- TRINITY SPECIALTY COMPOUNDING INCToxics Release Inventory · 0.6 mi
- BTR SEALING SYSTEMS WEST UNITY PLANTToxics Release Inventory · 0.6 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from West Unity'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 West Unity.
Total Sites
285
within ~10 miles of West Unity
Risk Level
Elevated
Highest-severity
45 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of West Unity
Severity Distribution
within ~10 miles of West Unity
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around West Unity, Toxics Release Inventory runs higher than the national average — 45 sites within ~10 miles of West Unity. Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Check your specific parcel in West Unity
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 West Unity average
Your land is one point inside West Unity
Everything above resolves to West Unity as a whole — one PHZM band and one 28°F frost record, read across 985 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 West Unity Average
West Unity Average
- ●USDA Zones 6a, averaged across West Unity
- ●One soil character for all of West Unity
- ●Frost dates read at West Unity's scale: Apr 15 to Oct 28
YOUR Parcel
- ✓Your exact zone, not West Unity's 6a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in West Unity
Pull a site-specific report for your exact address in West Unity, Ohio — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that West Unity averages can't show:
We read public map data around West Unity — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the West Unity average
How we know this about West Unity
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 West Unity’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 West Unity
When does frost risk typically end in West Unity?
The last hard freeze (28°F) in West Unity typically lands around Apr 15, 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 6.
When is the first frost in West Unity?
The first hard freeze (28°F) in West Unity typically arrives around Oct 28, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 14, so the watching starts about Sep 28 — about 196 days after the spring freeze cleared.
How long is the growing season in West Unity?
Measured between 28°F hard freezes, West Unity sees about 196 frost-free days — roughly Apr 15 through Oct 28, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 6 to Oct 14, about 161 days.
Is the soil safe to grow vegetables in West Unity?
The federal record around West Unity is a meaningful one — 285 documented sites, mostly Underground Storage Tanks entries (124), the nearest Brownfields 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 West Unity?
From about Sep 28 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 28 (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 28. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at West Unity's scale — its 6a band and its 196-day season. Your yard writes its own version of West Unity'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 West Unity’s own scale
7 of the readings below were taken at West Unity's own scale — its own ~196-day season between 28°F freezes, the 985 acres it covers and 285 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- West Unity's own USDA hardiness band, zones 6aUSDA PHZM 2023
- West Unity's own 28°F hard-freeze dates, about Apr 15 and Oct 28 and the ~196-day span between themNOAA 1991–2020 Climate Normals
- 285 documented contamination sites on the federal record near West Unity, the closest Brownfields record about 0.1 miles out from the town centreFederal environmental registers
- West Unity's boundary and the 985 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 West Unity's own centroid, the Eastern Corn Belt PlainsUS EPA Level III Ecoregions
- Lanternfly survey cells around West Unity 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 West Unity's 985 acres read through its county's SSURGO summaryfrom Williams County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Williams 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 Williams County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among West Unity's 985 acreswhy one lot differs from the next →
- Which side of West Unity you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 985 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields 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 West Unity-wide figureread your own land →
More in Ohio
Wider growing context
What grows across OhioWest Unity sits outside our named growing regions, so Ohio as a whole is its closest context here.
Nearby growing guides