South Whitley, Indiana, sits in USDA hardiness zone 6a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
These conditions suit cabbage, hazelnut, lavender, and collard greens — a starting list any specific site will trim or extend with its own soil, sun, and drainage.
Even in South Whitley, 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 South Whitley 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 South Whitley — soil, climate, flood, and parcel records. How we handle your address.
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South Whitley — the short answer
South Whitley, Indiana: USDA zone 6a, about 199 days between hard freezes, across 545 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)
- Oct 29
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~199
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 545 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 South Whitley's average, not your lot's — a low corner or a tree line moves it. Against South Whitley's 199-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in South Whitley
Each reading below is measured for South Whitley itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredSouth Whitley runs about 199 days between hard freezes — a moderate growing season.
There is room for the full run of cool-season crops plus a warm-season main crop, but the calendar is tight enough that a late spring or early fall frost still decides how much finishes.
Time warm-season transplants to your last hard freeze, and a few weeks of season extension turns a near-miss harvest into a sure one.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredSouth Whitley 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 South Whitley is in
South Whitley sits in the Eastern Corn Belt Plains — EPA Level III, inside the wider Eastern Temperate Forests. That is read at South Whitley's own centroid rather than borrowed from Whitley County.
What Grows in South Whitley
Every plant below cleared South Whitley's own zone 6a and its 199-day season. Each card opens that plant's Indiana profile. How we score.
Is it too late to plant in South Whitley?
For most of the year, no — what changes is which crops still fit the days remaining. 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 Oct 29 — long-season crops need about 90 days of runway, quick greens only 30. The tail of the season still works: sixty-day crops into late summer, quick greens after, garlic last of all.
Documented around South Whitley
Spotted lanternfly documented 14 miles from South Whitley, first recorded 2022. What to watch for.
What's on the federal record near South Whitley
Closest first, within ~10 miles of South Whitley. Listing isn't leaking, and distance isn't exposure.
- SPRINT COMMUNICATION COMPANY LPUnderground Storage Tanks · 850 ft
- JOHNSON BROS SIGNSBrownfields · 900 ft
- Johnson Brothers SignsUnderground Storage Tanks · 950 ft
- PLASTIC VENEERGUnderground Storage Tanks · 950 ft
- PHIL KRIDERS SERVICEUnderground Storage Tanks · 950 ft
- UPTOWN MARATHONUnderground Storage Tanks · 950 ft
- ARNOLD BROTHERS OIL & PARTS COMPANY INCORPORATEDUnderground Storage Tanks · 1000 ft
- WHITKO MAINTENANCE DEPARTMENTUnderground Storage Tanks · 1000 ft
- RUDDS FRIENDLY SERVICEUnderground Storage Tanks · 1200 ft
- WHITLEY TRAILER COURT & SALESUnderground Storage Tanks · 1600 ft
- South Whitley Agriculture CenterUnderground Storage Tanks · 2000 ft
- DEPOT SIGNAL SHOPUnderground Storage Tanks · 2000 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from South Whitley'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 South Whitley.
Sources Checked
within ~10 miles of South Whitley
Severity Distribution
within ~10 miles of South Whitley
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around South Whitley, two things run higher than the national average within ~10 miles of South Whitley — Toxics Release Inventory (16 sites) and Underground Storage Tanks (106 sites). That's not a problem with your land — it's information about it.
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 South Whitley
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 South Whitley average
Your land is one point inside South Whitley
Everything above resolves to South Whitley as a whole — one PHZM band and one 28°F frost record, read across 545 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 South Whitley Average
South Whitley Average
- ●USDA Zones 6a, averaged across South Whitley
- ●One soil character for all of South Whitley
- ●Frost dates read at South Whitley's scale: Apr 13 to Oct 29
YOUR Parcel
- ✓Your exact zone, not South Whitley's 6a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in South Whitley
Pull a site-specific report for your exact address in South Whitley, Indiana — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that South Whitley averages can't show:
We read public map data around South Whitley — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the South Whitley average
How we know this about South Whitley
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 South Whitley’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 South Whitley
When does frost risk typically end in South Whitley?
The last hard freeze (28°F) in South Whitley 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 South Whitley?
The first hard freeze (28°F) in South Whitley typically arrives around Oct 29, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 15, so the watching starts about Sep 29 — about 199 days after the spring freeze cleared.
How long is the growing season in South Whitley?
Measured between 28°F hard freezes, South Whitley sees about 199 frost-free days — roughly Apr 13 through Oct 29, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 4 to Oct 15, about 164 days.
Is the soil safe to grow vegetables in South Whitley?
The federal record around South Whitley is a meaningful one — 169 documented sites, mostly Underground Storage Tanks entries (106), the nearest Underground Storage Tanks 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 South Whitley?
From about Sep 29 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 29 (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 29. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at South Whitley's scale — its 6a band and its 199-day season. Your yard writes its own version of South Whitley'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 South Whitley’s own scale
7 of the readings below were taken at South Whitley's own scale — its own ~199-day season between 28°F freezes, the 545 acres it covers and 169 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- South Whitley's own USDA hardiness band, zones 6aUSDA PHZM 2023
- South Whitley's own 28°F hard-freeze dates, about Apr 13 and Oct 29 and the ~199-day span between themNOAA 1991–2020 Climate Normals
- 169 documented contamination sites on the federal record near South Whitley, the closest Underground Storage Tanks record about 0.2 miles out from the town centreFederal environmental registers
- South Whitley's boundary and the 545 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6a and a ~199-day seasonGrowable Ground crop-matching engine
- The ecoregion at South Whitley's own centroid, the Eastern Corn Belt PlainsUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of South Whitleylydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so South Whitley's 545 acres read through its county's SSURGO summaryfrom Whitley County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Whitley 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 Whitley County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among South Whitley's 545 acreswhy one lot differs from the next →
- Which side of South Whitley you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 545 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks 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 South Whitley-wide figureread your own land →
More in Indiana
Wider growing context
What grows across IndianaSouth Whitley sits outside our named growing regions, so Indiana as a whole is its closest context here.
Nearby growing guides