Miller City, 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 Miller City, 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 Miller City 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 Miller City — soil, climate, flood, and parcel records. How we handle your address.
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Miller City — the short answer
Miller City, Ohio: USDA zone 6a, about 208 days between hard freezes, across 253 acres of town.
- USDA zone
- 6a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 11
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 5
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~208
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 253 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 Miller City's average, not your lot's — a low corner or a tree line moves it. Against Miller City's 208-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Miller City
Each reading below is measured for Miller City itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredMiller City runs about 208 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
MeasuredMiller City 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 Miller City is in
Miller City sits in the Huron/Erie Lake Plains — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Miller City's own centroid rather than borrowed from Putnam County.
What Grows in Miller City
Every plant below cleared Miller City's own zone 6a and its 208-day season. Each card opens that plant's Ohio profile. How we score.
Is it too late to plant in Miller City?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Mar 14; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 11 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 5 — 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 Miller City
Survey cells within 31 miles of Miller City checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 39 miles off. What to watch for.
What's on the federal record near Miller City
Closest first, within ~10 miles of Miller City. Listing isn't leaking, and distance isn't exposure.
- SILER PIT STOP LLCUnderground Storage Tanks · 500 ft
- BROOKHILL CENTERUnderground Storage Tanks · 2.7 mi
- CONTINENTAL MAIN STOPUnderground Storage Tanks · 3.1 mi
- STAN'S WASH & FILLUnderground Storage Tanks · 3.5 mi
- BOB RUHE AG SERVICE, INC.Underground Storage Tanks · 4.4 mi
- VERHOFF MACHINE & WELDINGBrownfields · 4.5 mi
- WILHELM FARMS (SATELLITE HEIFER/STEER FACILITY)CAFO · 4.7 mi
- CHUCKS MARATHONUnderground Storage Tanks · 6.3 mi
- J & W'S COUNTRY CORNER INCUnderground Storage Tanks · 6.3 mi
- NELSON MANUFACTURINGBrownfields · 6.5 mi
- BROOKYS INCUnderground Storage Tanks · 6.6 mi
- OTTAWA BULK PLANTUnderground Storage Tanks · 6.6 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Miller City'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 Miller City.
Total Sites
108
within ~10 miles of Miller City
Risk Level
Elevated
Highest-severity
3 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Miller City
Severity Distribution
within ~10 miles of Miller City
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Miller City, two things run higher than the national average within ~10 miles of Miller City — Superfund (3 sites) and Toxics Release Inventory (10 sites). That's not a problem with your land — it's information about it.
Superfund: Superfund sites represent the most severe contamination in the federal system.
Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.
Commission professional soil testing before any food production (test for heavy metals, VOCs, and SVOCs).
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Check your specific parcel in Miller City
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 Miller City average
Your land is one point inside Miller City
Everything above resolves to Miller City as a whole — one PHZM band and one 28°F frost record, read across 253 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 Miller City Average
Miller City Average
- ●USDA Zones 6a, averaged across Miller City
- ●One soil character for all of Miller City
- ●Frost dates read at Miller City's scale: Apr 11 to Nov 5
YOUR Parcel
- ✓Your exact zone, not Miller City's 6a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Miller City
Pull a site-specific report for your exact address in Miller City, Ohio — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Miller City averages can't show:
We read public map data around Miller City — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Miller City average
How we know this about Miller City
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 Miller City’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 Miller City
When does frost risk typically end in Miller City?
The last hard freeze (28°F) in Miller City typically lands around Apr 11, 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 2.
When is the first frost in Miller City?
The first hard freeze (28°F) in Miller City typically arrives around Nov 5, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 22, so the watching starts about Oct 6 — about 208 days after the spring freeze cleared.
How long is the growing season in Miller City?
Measured between 28°F hard freezes, Miller City sees about 208 frost-free days — roughly Apr 11 through Nov 5, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 2 to Oct 22, about 173 days.
Is the soil safe to grow vegetables in Miller City?
The federal record around Miller City is a meaningful one — 108 documented sites, mostly Underground Storage Tanks entries (62), the nearest Underground Storage Tanks record under a tenth of a mile 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 Miller City?
From about Oct 6 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 5 (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 5. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Miller City's scale — its 6a band and its 208-day season. Your yard writes its own version of Miller City'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 Miller City’s own scale
7 of the readings below were taken at Miller City's own scale — its own ~208-day season between 28°F freezes, the 253 acres it covers and 108 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Miller City's own USDA hardiness band, zones 6aUSDA PHZM 2023
- Miller City's own 28°F hard-freeze dates, about Apr 11 and Nov 5 and the ~208-day span between themNOAA 1991–2020 Climate Normals
- 108 documented contamination sites on the federal record near Miller City, the closest Underground Storage Tanks record under a tenth of a mile out from the town centreFederal environmental registers
- Miller City's boundary and the 253 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6a and a ~208-day seasonGrowable Ground crop-matching engine
- The ecoregion at Miller City's own centroid, the Huron/Erie Lake PlainsUS EPA Level III Ecoregions
- Lanternfly survey cells around Miller City 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 Miller City's 253 acres read through its county's SSURGO summaryfrom Putnam County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Putnam 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 Putnam County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Miller City's 253 acreswhy one lot differs from the next →
- Which side of Miller City you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 253 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 Miller City-wide figureread your own land →
More in Ohio
Wider growing context
What grows across OhioMiller City sits outside our named growing regions, so Ohio as a whole is its closest context here.
Nearby growing guides