Hartford City, Indiana, sits in USDA hardiness zone 6a — a zone band wide enough that plant choice, not possibility, is the interesting question.
The conditions favor cabbage, hazelnut, lavender, and collard greens, among others — though every individual site edits that list with its own soil, sun, and drainage.
Even in Hartford 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 Hartford 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 Hartford City — soil, climate, flood, and parcel records. How we handle your address.
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Hartford City — the short answer
Hartford City, Indiana: USDA zone 6a, about 207 days between hard freezes, across 2K acres of city.
- USDA zone
- 6a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 9
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 2
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~207
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 2K 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 Hartford City's average, not your lot's — a low corner or a tree line moves it. Against Hartford City's 207-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Hartford City
Each reading below is measured for Hartford City itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredHartford City runs about 207 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
MeasuredHartford 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 Hartford City is in
Hartford City sits in the Eastern Corn Belt Plains — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Hartford City's own centroid rather than borrowed from Blackford County.
What Grows in Hartford City
Every plant below cleared Hartford City's own zone 6a and its 207-day season. Each card opens that plant's Indiana profile. How we score.
Is it too late to plant in Hartford City?
Rarely: the season closes in stages, not all at once, and each stage has its crops. Cool-season crops can go in from around Mar 12; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 9 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 2 — long-season crops need about 90 days of runway, quick greens only 30. There is slack in a calendar like this — late plantings, second rounds of favorites, and a fall bench that keeps beds working.
Documented around Hartford City
Survey cells within 31 miles of Hartford City checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 32 miles off. What to watch for.
What's on the federal record near Hartford City
Closest first, within ~10 miles of Hartford City. Listing isn't leaking, and distance isn't exposure.
- GARDINER THE CLEANERUnderground Storage Tanks · 750 ft
- PAK A SAKUnderground Storage Tanks · 850 ft
- Clark Oil 686Underground Storage Tanks · 900 ft
- MESSERSMITHS SALES & SERVICE INCORPORATEDUnderground Storage Tanks · 900 ft
- CUTTING INCORPORATEDUnderground Storage Tanks · 900 ft
- CLARK OIL 686Brownfields · 900 ft
- MUSSELMAN GARAGEUnderground Storage Tanks · 950 ft
- RONNIE LEE HARTLEYUnderground Storage Tanks · 1000 ft
- BAUER CHEVROLET INCORPORATIONUnderground Storage Tanks · 1000 ft
- IN DOTUnderground Storage Tanks · 1000 ft
- Pak-A-Sak 4Underground Storage Tanks · 1100 ft
- DEES PARK & SHOPUnderground Storage Tanks · 1100 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Hartford 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 Hartford City.
Total Sites
155
within ~10 miles of Hartford City
Risk Level
Elevated
Highest-severity
2 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Hartford City
Severity Distribution
within ~10 miles of Hartford City
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Hartford City, two things run higher than the national average within ~10 miles of Hartford City — Toxics Release Inventory (13 sites) and Underground Storage Tanks (107 sites). Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.
Underground Storage Tanks: Underground storage tanks are the single most common source of soil contamination near homes and gardens.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Use raised beds with imported soil — this eliminates the primary soil-contact pathway.
Check your specific parcel in Hartford 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 Hartford City average
Your land is one point inside Hartford City
Everything above resolves to Hartford City as a whole — one PHZM band and one 28°F frost record, read across 2K 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 city 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 Hartford City Average
Hartford City Average
- ●USDA Zones 6a, averaged across Hartford City
- ●One soil character for all of Hartford City
- ●Frost dates read at Hartford City's scale: Apr 9 to Nov 2
YOUR Parcel
- ✓Your exact zone, not Hartford City's 6a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Hartford City
Pull a site-specific report for your exact address in Hartford City, Indiana — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Hartford City averages can't show:
We read public map data around Hartford City — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Hartford City average
How we know this about Hartford City
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at this city’s own centroid; hard-freeze dates from NOAA 1991–2020 28°F normals at Hartford 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 city grain anywhere on this page — there is no city-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 Hartford City
When does frost risk typically end in Hartford City?
The last hard freeze (28°F) in Hartford City typically lands around Apr 9, 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 30.
When is the first frost in Hartford City?
The first hard freeze (28°F) in Hartford City typically arrives around Nov 2, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 19, so the watching starts about Oct 3 — about 207 days after the spring freeze cleared.
How long is the growing season in Hartford City?
Measured between 28°F hard freezes, Hartford City sees about 207 frost-free days — roughly Apr 9 through Nov 2, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 30 to Oct 19, about 172 days.
Is the soil safe to grow vegetables in Hartford City?
The federal record around Hartford City is a meaningful one — 155 documented sites, mostly Underground Storage Tanks entries (107), the nearest Underground Storage Tanks record about 0.1 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 Hartford City?
From about Oct 3 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 2 (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 2. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Hartford City's scale — its 6a band and its 207-day season. Your yard writes its own version of Hartford 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 Hartford City’s own scale
7 of the readings below were taken at Hartford City's own scale — its own ~207-day season between 28°F freezes, the 2,484 acres it covers and 155 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Hartford City's own USDA hardiness band, zones 6aUSDA PHZM 2023
- Hartford City's own 28°F hard-freeze dates, about Apr 9 and Nov 2 and the ~207-day span between themNOAA 1991–2020 Climate Normals
- 155 documented contamination sites on the federal record near Hartford City, the closest Underground Storage Tanks record about 0.1 miles out from the town centreFederal environmental registers
- Hartford City's boundary and the 2,484 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6a and a ~207-day seasonGrowable Ground crop-matching engine
- The ecoregion at Hartford City's own centroid, the Eastern Corn Belt PlainsUS EPA Level III Ecoregions
- Lanternfly survey cells around Hartford 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 Hartford City's 2,484 acres read through its county's SSURGO summaryfrom Blackford County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Blackford County
- The growing challenges every Indiana grower plans around — written at state scale, so they stay on the state guidefrom Indiana
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Blackford County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Hartford City's 2,484 acreswhy one lot differs from the next →
- Which side of Hartford 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 2,484 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.1 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 Hartford City-wide figureread your own land →
More in Indiana
Wider growing context
What grows across IndianaHartford City sits outside our named growing regions, so Indiana as a whole is its closest context here.
Nearby growing guides