Cardington, Ohio, sits in USDA hardiness zone 6a — a zone band wide enough that plant choice, not possibility, is the interesting question.
On paper, cabbage, hazelnut, lavender, and collard greens all suit these conditions — on the ground, soil, sun, and drainage make the final call.
Even in Cardington, 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 Cardington 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 Cardington — soil, climate, flood, and parcel records. How we handle your address.
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Cardington — the short answer
Cardington, Ohio: USDA zone 6a, about 202 days between hard freezes, across 1K acres of town.
- USDA zone
- 6a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 13
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 1
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~202
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 1K 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 Cardington's average, not your lot's — a low corner or a tree line moves it. Against Cardington's 202-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Cardington
Each reading below is measured for Cardington itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredCardington runs about 202 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
MeasuredCardington 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 Cardington is in
Cardington sits in the Eastern Corn Belt Plains — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Cardington's own centroid, and it is not what its county reads: Morrow County is mostly Erie Drift Plain. The wider page above you is answering a different question about different ground.
What Grows in Cardington
Every plant below cleared Cardington's own zone 6a and its 202-day season. Each card opens that plant's Ohio profile. How we score.
Is it too late to plant in Cardington?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Mar 16; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 13 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 1 — 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 Cardington
Survey cells within 31 miles of Cardington checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 34 miles off. What to watch for.
What's on the federal record near Cardington
Closest first, within ~10 miles of Cardington. Listing isn't leaking, and distance isn't exposure.
- CARSNER BROS LTD (DBA) CARDINGTON HOME & AUTO; CARSNER TRUE VALUE HARDWAREBrownfields · 950 ft
- CARSNER OIL CO., INC.Underground Storage Tanks · 1000 ft
- CARSNER OIL COUnderground Storage Tanks · 1100 ft
- STAHL MANUFACTURINGToxics Release Inventory · 1300 ft
- MATHEWS SERVICE STATIONUnderground Storage Tanks · 1700 ft
- CARDINGTON DUCHESSUnderground Storage Tanks · 1800 ft
- CARDINGTON LINCOLN SCHOOLUnderground Storage Tanks · 2600 ft
- FAMILY DOLLAR #6936Brownfields · 0.6 mi
- UNIROYALUnderground Storage Tanks · 0.7 mi
- DOLLAR GENERAL STORE #12788Brownfields · 0.7 mi
- WATER TREATMENT PLANTUnderground Storage Tanks · 0.7 mi
- MORROW COUNTY AIRPORTUnderground Storage Tanks · 0.7 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Cardington'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 Cardington.
Total Sites
98
within ~10 miles of Cardington
Risk Level
Elevated
Highest-severity
4 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Cardington
Severity Distribution
within ~10 miles of Cardington
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Cardington, two things run higher than the national average within ~10 miles of Cardington — Superfund (4 sites) and Toxics Release Inventory (8 sites). It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around 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 Cardington
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 Cardington average
Your land is one point inside Cardington
Everything above resolves to Cardington as a whole — one PHZM band and one 28°F frost record, read across 1K 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 Cardington Average
Cardington Average
- ●USDA Zones 6a, averaged across Cardington
- ●One soil character for all of Cardington
- ●Frost dates read at Cardington's scale: Apr 13 to Nov 1
YOUR Parcel
- ✓Your exact zone, not Cardington's 6a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Cardington
Pull a site-specific report for your exact address in Cardington, Ohio — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Cardington averages can't show:
We read public map data around Cardington — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Cardington average
How we know this about Cardington
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 Cardington’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 Cardington
When does frost risk typically end in Cardington?
The last hard freeze (28°F) in Cardington typically lands around Apr 13, 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 4.
When is the first frost in Cardington?
The first hard freeze (28°F) in Cardington typically arrives around Nov 1, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 18, so the watching starts about Oct 2 — about 202 days after the spring freeze cleared.
How long is the growing season in Cardington?
Measured between 28°F hard freezes, Cardington sees about 202 frost-free days — roughly Apr 13 through Nov 1, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 4 to Oct 18, about 167 days.
Is the soil safe to grow vegetables in Cardington?
The federal record around Cardington is a meaningful one — 98 documented sites, mostly Underground Storage Tanks entries (53), the nearest Brownfields record about 0.2 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 Cardington?
From about Oct 2 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 1 (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 1. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Cardington's scale — its 6a band and its 202-day season. Your yard writes its own version of Cardington'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 Cardington’s own scale
7 of the readings below were taken at Cardington's own scale — its own ~202-day season between 28°F freezes, the 1,284 acres it covers and 98 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Cardington's own USDA hardiness band, zones 6aUSDA PHZM 2023
- Cardington's own 28°F hard-freeze dates, about Apr 13 and Nov 1 and the ~202-day span between themNOAA 1991–2020 Climate Normals
- 98 documented contamination sites on the federal record near Cardington, the closest Brownfields record about 0.2 miles out from the town centreFederal environmental registers
- Cardington's boundary and the 1,284 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6a and a ~202-day seasonGrowable Ground crop-matching engine
- Cardington sits in the Eastern Corn Belt Plains — not the ecoregion its county mostly readsUS EPA Level III Ecoregions
- Lanternfly survey cells around Cardington 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 Cardington's 1,284 acres read through its county's SSURGO summaryfrom Morrow County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Morrow 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 Morrow County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Cardington's 1,284 acreswhy one lot differs from the next →
- Which side of Cardington you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,284 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields record about 0.2 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 Cardington-wide figureread your own land →
More in Ohio
Wider growing context
What grows across OhioCardington sits outside our named growing regions, so Ohio as a whole is its closest context here.
Nearby growing guides