Dupont, Ohio, sits in USDA hardiness zone 6a — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
Reliable performers under these conditions include cabbage, hazelnut, lavender, and collard greens; what your own ground favors still comes down to its soil, sun, and drainage.
Even in Dupont, 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 Dupont 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 Dupont — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Dupont — the short answer
Dupont, Ohio: USDA zone 6a, about 203 days between hard freezes, across 584 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)
- Oct 31
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~203
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 584 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 Dupont's average, not your lot's — a low corner or a tree line moves it. Against Dupont's 203-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Dupont
Each reading below is measured for Dupont itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredDupont runs about 203 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
MeasuredDupont 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 Dupont is in
Dupont sits in the Huron/Erie Lake Plains — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Dupont's own centroid rather than borrowed from Putnam County.
What Grows in Dupont
Every plant below cleared Dupont's own zone 6a and its 203-day season. Each card opens that plant's Ohio profile. How we score.
Is it too late to plant in Dupont?
Almost never — the real question is what to plant next. 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 Oct 31 — long-season crops need about 90 days of runway, quick greens only 30. With a season this long, “too late” mostly means “switch crops” — second sowings and a full fall garden are the norm, with garlic closing the year.
Documented around Dupont
Survey cells within 31 miles of Dupont checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 46 miles off. What to watch for.
What's on the federal record near Dupont
Closest first, within ~10 miles of Dupont. Listing isn't leaking, and distance isn't exposure.
- 1ST EAGLE EXPRESSBrownfields · 2.1 mi
- DUPONT SERVICE CO.Underground Storage Tanks · 3.1 mi
- DOLLAR GENERAL STORE #10222Brownfields · 3.2 mi
- NEW MILLENIUM BUILDING SYSTEMSToxics Release Inventory · 3.2 mi
- H & K CHEVY PONTIAC BUICKBrownfields · 3.3 mi
- CONTINENTAL TELEPHONE CO.Underground Storage Tanks · 3.5 mi
- FORMER KOCKEL'S GROCERYUnderground Storage Tanks · 4.3 mi
- MORNING STAR EXPRESSUnderground Storage Tanks · 4.8 mi
- BRAUN INDUSTRIES, INCUnderground Storage Tanks · 4.9 mi
- FAT BOY CARRY OUTUnderground Storage Tanks · 4.9 mi
- VERHOFF MACHINE & WELDINGBrownfields · 5.0 mi
- HENRY COUNTY LAND REUTILIZATION CORPUnderground Storage Tanks · 5.9 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Dupont'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 Dupont.
Total Sites
50
within ~10 miles of Dupont
Risk Level
Moderate
Highest-severity
5 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of Dupont
Severity Distribution
within ~10 miles of Dupont
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Dupont, Toxics Release Inventory runs higher than the national average — 5 sites within ~10 miles of Dupont. It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
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 Dupont
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 Dupont average
Your land is one point inside Dupont
Everything above resolves to Dupont as a whole — one PHZM band and one 28°F frost record, read across 584 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 Dupont Average
Dupont Average
- ●USDA Zones 6a, averaged across Dupont
- ●One soil character for all of Dupont
- ●Frost dates read at Dupont's scale: Apr 11 to Oct 31
YOUR Parcel
- ✓Your exact zone, not Dupont's 6a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Dupont
Pull a site-specific report for your exact address in Dupont, Ohio — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Dupont averages can't show:
We read public map data around Dupont — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Dupont average
How we know this about Dupont
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 Dupont’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 Dupont
When does frost risk typically end in Dupont?
The last hard freeze (28°F) in Dupont 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 Dupont?
The first hard freeze (28°F) in Dupont typically arrives around Oct 31, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 17, so the watching starts about Oct 1 — about 203 days after the spring freeze cleared.
How long is the growing season in Dupont?
Measured between 28°F hard freezes, Dupont sees about 203 frost-free days — roughly Apr 11 through Oct 31, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 2 to Oct 17, about 168 days.
Is the soil safe to grow vegetables in Dupont?
The federal record around Dupont shows 50 documented sites, mostly Underground Storage Tanks entries (27), the nearest Brownfields record about 2.1 miles 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 Dupont?
From about Oct 1 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 31 (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 31. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Dupont's scale — its 6a band and its 203-day season. Your yard writes its own version of Dupont'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 Dupont’s own scale
7 of the readings below were taken at Dupont's own scale — its own ~203-day season between 28°F freezes, the 584 acres it covers and 50 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Dupont's own USDA hardiness band, zones 6aUSDA PHZM 2023
- Dupont's own 28°F hard-freeze dates, about Apr 11 and Oct 31 and the ~203-day span between themNOAA 1991–2020 Climate Normals
- 50 documented contamination sites on the federal record near Dupont, the closest Brownfields record about 2.1 miles out from the town centreFederal environmental registers
- Dupont's boundary and the 584 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6a and a ~203-day seasonGrowable Ground crop-matching engine
- The ecoregion at Dupont's own centroid, the Huron/Erie Lake PlainsUS EPA Level III Ecoregions
- Lanternfly survey cells around Dupont 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 Dupont's 584 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 Dupont's 584 acreswhy one lot differs from the next →
- Which side of Dupont you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 584 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields record about 2.1 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 Dupont-wide figureread your own land →
More in Ohio
Wider growing context
What grows across OhioDupont sits outside our named growing regions, so Ohio as a whole is its closest context here.
Nearby growing guides