Dillonvale, Ohio, sits in USDA hardiness zone 6b — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
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 Dillonvale, 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 Dillonvale 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 Dillonvale — soil, climate, flood, and parcel records. How we handle your address.
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Dillonvale — the short answer
Dillonvale, Ohio: USDA zone 6b, about 226 days between hard freezes, across 571 acres of town.
- 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 12
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~226
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 571 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 Dillonvale's average, not your lot's — a low corner or a tree line moves it. Against Dillonvale's 226-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Dillonvale
Each reading below is measured for Dillonvale itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredDillonvale runs about 226 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
MeasuredDillonvale 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 Dillonvale is in
Dillonvale sits in the Eastern Corn Belt Plains — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Dillonvale's own centroid rather than borrowed from Hamilton County.
What Grows in Dillonvale
Every plant below cleared Dillonvale's own zone 6b and its 226-day season. Each card opens that plant's Ohio profile. How we score.
Is it too late to plant in Dillonvale?
Almost never — the real question is what to plant next. 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 12 — 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 Dillonvale
Spotted lanternfly documented 9 miles from Dillonvale, first recorded 2023. What to watch for.
What's on the federal record near Dillonvale
Closest first, within ~10 miles of Dillonvale. Listing isn't leaking, and distance isn't exposure.
- DEER PARK JR/SR HIGH SCHOOLBrownfields · 0.5 mi
- SAINT SAVIOUR CHURCHUnderground Storage Tanks · 0.5 mi
- DEER PARK AUTO SERVICEBrownfields · 0.6 mi
- READING CITY PWSPFAS · 0.6 mi
- ONE PRICE CLEANERSBrownfields · 0.6 mi
- WALGREENS #2136Brownfields · 0.6 mi
- UNITED DAIRY FARMERS #166Underground Storage Tanks · 0.7 mi
- BP OIL CO. #09171Underground Storage Tanks · 0.7 mi
- KROGER #942Brownfields · 0.7 mi
- FORMER MOBILE GAS STATIONUnderground Storage Tanks · 0.7 mi
- CVS PHARMACY #17574Brownfields · 0.7 mi
- TARGET STORE T2557Brownfields · 0.7 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Dillonvale'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 Dillonvale.
Sources Checked
within ~10 miles of Dillonvale
Severity Distribution
within ~10 miles of Dillonvale
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Dillonvale, two things run higher than the national average within ~10 miles of Dillonvale — Toxics Release Inventory (351 sites) and Superfund (39 sites). 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.
Superfund: Superfund sites represent the most severe contamination in the federal system.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Commission professional soil testing before any food production (test for heavy metals, VOCs, and SVOCs).
Check your specific parcel in Dillonvale
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 Dillonvale average
Your land is one point inside Dillonvale
Everything above resolves to Dillonvale as a whole — one PHZM band and one 28°F frost record, read across 571 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 Dillonvale Average
Dillonvale Average
- ●USDA Zones 6b, averaged across Dillonvale
- ●One soil character for all of Dillonvale
- ●Frost dates read at Dillonvale's scale: Mar 31 to Nov 12
YOUR Parcel
- ✓Your exact zone, not Dillonvale's 6b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Dillonvale
Pull a site-specific report for your exact address in Dillonvale, Ohio — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Dillonvale averages can't show:
We read public map data around Dillonvale — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Dillonvale average
How we know this about Dillonvale
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 Dillonvale’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 Dillonvale
When does frost risk typically end in Dillonvale?
The last hard freeze (28°F) in Dillonvale 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 Dillonvale?
The first hard freeze (28°F) in Dillonvale typically arrives around Nov 12, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 29, so the watching starts about Oct 13 — about 226 days after the spring freeze cleared.
How long is the growing season in Dillonvale?
Measured between 28°F hard freezes, Dillonvale sees about 226 frost-free days — roughly Mar 31 through Nov 12, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 21 to Oct 29, about 191 days.
Is the soil safe to grow vegetables in Dillonvale?
The federal record around Dillonvale runs heavier than most — 3,015 documented sites, mostly Underground Storage Tanks entries (1,550), the nearest Brownfields record about 0.5 miles out — so test the soil before planting food in the ground, and raised beds with clean imported soil grow well in the meantime. Even here, proximity to a documented site is information, not a diagnosis of any one yard; the contamination map shows exactly what's recorded and where.
How do I protect my plants from frost in Dillonvale?
From about Oct 13 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 12 (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 12. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Dillonvale's scale — its 6b band and its 226-day season. Your yard writes its own version of Dillonvale'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 Dillonvale’s own scale
7 of the readings below were taken at Dillonvale's own scale — its own ~226-day season between 28°F freezes, the 571 acres it covers and 3,015 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Dillonvale's own USDA hardiness band, zones 6bUSDA PHZM 2023
- Dillonvale's own 28°F hard-freeze dates, about Mar 31 and Nov 12 and the ~226-day span between themNOAA 1991–2020 Climate Normals
- 3,015 documented contamination sites on the federal record near Dillonvale, the closest Brownfields record about 0.5 miles out from the town centreFederal environmental registers
- Dillonvale's boundary and the 571 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6b and a ~226-day seasonGrowable Ground crop-matching engine
- The ecoregion at Dillonvale's own centroid, the Eastern Corn Belt PlainsUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Dillonvalelydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Dillonvale's 571 acres read through its county's SSURGO summaryfrom Hamilton County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Hamilton 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 Hamilton County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Dillonvale's 571 acreswhy one lot differs from the next →
- Which side of Dillonvale you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 571 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields record about 0.5 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 Dillonvale-wide figureread your own land →
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