Salem, Indiana, sits in USDA hardiness zone 6b — a zone band wide enough that plant choice, not possibility, is the interesting question.
Well-matched crops include cabbage, hazelnut, lavender, and collard greens, and the gap between "grows in the area" and "grows in your yard" is closed by soil, sun, and drainage.
Even in Salem, 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 Salem 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 Salem — soil, climate, flood, and parcel records. How we handle your address.
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Salem — the short answer
Salem, Indiana: USDA zone 6b, about 212 days between hard freezes, across 3K acres of city.
- USDA zone
- 6b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 5
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 3
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~212
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 3K 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 Salem's average, not your lot's — a low corner or a tree line moves it. Against Salem's 212-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Salem
Each reading below is measured for Salem itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredSalem runs about 212 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
MeasuredSalem 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 Salem is in
Salem sits in the Interior Plateau — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Salem's own centroid rather than borrowed from Washington County.
What Grows in Salem
Every plant below cleared Salem's own zone 6b and its 212-day season. Each card opens that plant's Indiana profile. How we score.
Is it too late to plant in Salem?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Mar 8; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 5 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 3 — 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 Salem
Survey cells within 31 miles of Salem checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 63 miles off. What to watch for.
What's on the federal record near Salem
Closest first, within ~10 miles of Salem. Listing isn't leaking, and distance isn't exposure.
- Child Craft Industries IncorporatedUnderground Storage Tanks · 700 ft
- CHILD CRAFT INDUSTRIES INCORPORATEDToxics Release Inventory · 900 ft
- SHELL FOOD MARTUnderground Storage Tanks · 1000 ft
- SPRINT OIL COMPANYUnderground Storage Tanks · 1000 ft
- UNITED STATES POSTAL SERVICE MAIN POST OFFICEBrownfields · 1000 ft
- LMGR ENTERPRISES GIFT WORLDUnderground Storage Tanks · 1000 ft
- Family Dollar 7921Underground Storage Tanks · 1100 ft
- KIEL BROTHERS OIL COMPANYUnderground Storage Tanks · 1100 ft
- HUMPHREY STOREUnderground Storage Tanks · 1100 ft
- Continental Telephone of Indiana IncorporatedUnderground Storage Tanks · 1100 ft
- GOODWILL INDUSTRIESUnderground Storage Tanks · 1200 ft
- Ashland PetroleumUnderground Storage Tanks · 1300 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Salem'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 Salem.
Total Sites
102
within ~10 miles of Salem
Risk Level
Moderate
Highest-severity
6 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of Salem
Severity Distribution
within ~10 miles of Salem
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Salem, two things run higher than the national average within ~10 miles of Salem — PFAS (3 sites) and Underground Storage Tanks (75 sites). That's not a problem with your land — it's information about it.
PFAS: PFAS (per- and polyfluoroalkyl substances) are called "forever chemicals" because they do not biodegrade.
Underground Storage Tanks: Underground storage tanks are the single most common source of soil contamination near homes and gardens.
Test irrigation water source — this is the primary pathway for PFAS to reach garden crops.
Use raised beds with imported soil — this eliminates the primary soil-contact pathway.
Check your specific parcel in Salem
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 Salem average
Your land is one point inside Salem
Everything above resolves to Salem as a whole — one PHZM band and one 28°F frost record, read across 3K 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 Salem Average
Salem Average
- ●USDA Zones 6b, averaged across Salem
- ●One soil character for all of Salem
- ●Frost dates read at Salem's scale: Apr 5 to Nov 3
YOUR Parcel
- ✓Your exact zone, not Salem's 6b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Salem
Pull a site-specific report for your exact address in Salem, Indiana — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Salem averages can't show:
We read public map data around Salem — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Salem average
How we know this about Salem
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 Salem’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 Salem
When does frost risk typically end in Salem?
The last hard freeze (28°F) in Salem typically lands around Apr 5, 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 26.
When is the first frost in Salem?
The first hard freeze (28°F) in Salem typically arrives around Nov 3, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 20, so the watching starts about Oct 4 — about 212 days after the spring freeze cleared.
How long is the growing season in Salem?
Measured between 28°F hard freezes, Salem sees about 212 frost-free days — roughly Apr 5 through Nov 3, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 26 to Oct 20, about 177 days.
Is the soil safe to grow vegetables in Salem?
The federal record around Salem shows 102 documented sites, mostly Underground Storage Tanks entries (75), the nearest Underground Storage Tanks record about 0.1 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 Salem?
From about Oct 4 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 3 (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 3. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Salem's scale — its 6b band and its 212-day season. Your yard writes its own version of Salem'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 Salem’s own scale
7 of the readings below were taken at Salem's own scale — its own ~212-day season between 28°F freezes, the 2,703 acres it covers and 102 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Salem's own USDA hardiness band, zones 6bUSDA PHZM 2023
- Salem's own 28°F hard-freeze dates, about Apr 5 and Nov 3 and the ~212-day span between themNOAA 1991–2020 Climate Normals
- 102 documented contamination sites on the federal record near Salem, the closest Underground Storage Tanks record about 0.1 miles out from the town centreFederal environmental registers
- Salem's boundary and the 2,703 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6b and a ~212-day seasonGrowable Ground crop-matching engine
- The ecoregion at Salem's own centroid, the Interior PlateauUS EPA Level III Ecoregions
- Lanternfly survey cells around Salem 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 Salem's 2,703 acres read through its county's SSURGO summaryfrom Washington County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Washington 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 Washington County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Salem's 2,703 acreswhy one lot differs from the next →
- Which side of Salem you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 2,703 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 Salem-wide figureread your own land →