Haviland, Ohio, sits in USDA hardiness zone 6a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
Among the crops suited to this profile: cabbage, hazelnut, lavender, and collard greens. The site-level story — soil, sun, drainage — decides the rest.
Even in Haviland, 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 Haviland 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 Haviland — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Haviland — the short answer
Haviland, Ohio: USDA zone 6a, about 204 days between hard freezes, across 252 acres of town.
- USDA zone
- 6a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 10
- 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
- ~204
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 252 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 Haviland's average, not your lot's — a low corner or a tree line moves it. Against Haviland's 204-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Haviland
Each reading below is measured for Haviland itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredHaviland runs about 204 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
MeasuredHaviland 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 Haviland is in
Haviland sits in the Huron/Erie Lake Plains — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Haviland's own centroid rather than borrowed from Paulding County.
What Grows in Haviland
Every plant below cleared Haviland's own zone 6a and its 204-day season. Each card opens that plant's Ohio profile. How we score.
Is it too late to plant in Haviland?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Mar 13; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 10 (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. A long window like this one runs successions deep into fall — and even its last weeks take quick greens and garlic.
Documented around Haviland
Survey cells within 31 miles of Haviland checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 31 miles off. What to watch for.
What's on the federal record near Haviland
Closest first, within ~10 miles of Haviland. Listing isn't leaking, and distance isn't exposure.
- LARRY LEWIS JUNKYARDSuperfund · 1400 ft
- WINFRED E. AGNESSUnderground Storage Tanks · 1.1 mi
- SCOTT EQUITY EXCHANGEUnderground Storage Tanks · 2.1 mi
- STONECO INC - SCOTT PLANTBrownfields · 4.7 mi
- AL CO PRODUCTS INCToxics Release Inventory · 4.8 mi
- BROUGHTON MARKETUnderground Storage Tanks · 5.5 mi
- JANET L. ROSSUnderground Storage Tanks · 5.6 mi
- N & N QUICK STOP CARRYOUT LLCUnderground Storage Tanks · 5.6 mi
- PBE TIRE & BATTERYBrownfields · 5.7 mi
- BLUE CREEK WIND FARM LLCBrownfields · 6.1 mi
- MCCOMB GREAT SCOTUnderground Storage Tanks · 6.7 mi
- LINCOLNVIEW NORTH ELEMENTARYUnderground Storage Tanks · 6.8 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Haviland'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 Haviland.
Total Sites
105
within ~10 miles of Haviland
Risk Level
Elevated
Highest-severity
1 Superfund site (none NPL-listed)
Sources Checked
within ~10 miles of Haviland
Severity Distribution
within ~10 miles of Haviland
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Haviland, Toxics Release Inventory runs higher than the national average — 11 sites within ~10 miles of Haviland. 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 Haviland
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 Haviland average
Your land is one point inside Haviland
Everything above resolves to Haviland as a whole — one PHZM band and one 28°F frost record, read across 252 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 Haviland Average
Haviland Average
- ●USDA Zones 6a, averaged across Haviland
- ●One soil character for all of Haviland
- ●Frost dates read at Haviland's scale: Apr 10 to Oct 31
YOUR Parcel
- ✓Your exact zone, not Haviland's 6a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Haviland
Pull a site-specific report for your exact address in Haviland, Ohio — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Haviland averages can't show:
We read public map data around Haviland — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Haviland average
How we know this about Haviland
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 Haviland’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 Haviland
When does frost risk typically end in Haviland?
The last hard freeze (28°F) in Haviland typically lands around Apr 10, 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 1.
When is the first frost in Haviland?
The first hard freeze (28°F) in Haviland 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 204 days after the spring freeze cleared.
How long is the growing season in Haviland?
Measured between 28°F hard freezes, Haviland sees about 204 frost-free days — roughly Apr 10 through Oct 31, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 1 to Oct 17, about 169 days.
Is the soil safe to grow vegetables in Haviland?
The federal record around Haviland is a meaningful one — 105 documented sites, mostly Underground Storage Tanks entries (57), the nearest Superfund record about 0.3 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 Haviland?
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 Haviland's scale — its 6a band and its 204-day season. Your yard writes its own version of Haviland'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 Haviland’s own scale
7 of the readings below were taken at Haviland's own scale — its own ~204-day season between 28°F freezes, the 252 acres it covers and 105 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Haviland's own USDA hardiness band, zones 6aUSDA PHZM 2023
- Haviland's own 28°F hard-freeze dates, about Apr 10 and Oct 31 and the ~204-day span between themNOAA 1991–2020 Climate Normals
- 105 documented contamination sites on the federal record near Haviland, the closest Superfund record about 0.3 miles out from the town centreFederal environmental registers
- Haviland's boundary and the 252 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6a and a ~204-day seasonGrowable Ground crop-matching engine
- The ecoregion at Haviland's own centroid, the Huron/Erie Lake PlainsUS EPA Level III Ecoregions
- Lanternfly survey cells around Haviland 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 Haviland's 252 acres read through its county's SSURGO summaryfrom Paulding County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Paulding 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 Paulding County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Haviland's 252 acreswhy one lot differs from the next →
- Which side of Haviland you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 252 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Superfund record about 0.3 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 Haviland-wide figureread your own land →
More in Ohio
Wider growing context
What grows across OhioHaviland sits outside our named growing regions, so Ohio as a whole is its closest context here.
Nearby growing guides