Perry County, in Indiana, sits in USDA hardiness zone 6b — a zone band wide enough that plant choice, not possibility, is the interesting question.
Reliable performers under these conditions include cabbage, hazelnut, lavender, and collard greens; what your own ground favors still comes down to its soil, sun, and drainage.
Perry County lies within the Southern Indiana & the Ohio River Valley and the Ohio River Valley — a regional growing area with its own character.
Grounded in USDA PHZM 2023 · Growable Ground suitability scoring · NOAA 1991–2020 Climate Normals
Perry County holds more than one microclimate.
Soils and elevations shift across Perry County, so your frost dates and drainage aren't the county average. 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 Perry County — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Perry County — the short answer
Perry County, Indiana: USDA zone 6b, about 220 days between hard freezes, across 244K acres.
- USDA zone
- 6b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 30
- NOAA 1991–2020 Climate Normals, 28°F
- First hard freeze (28°F)
- Nov 5
- NOAA 1991–2020 Climate Normals, 28°F
- Days between freezes
- ~220
- NOAA 1991–2020 Climate Normals, 28°F
- County area
- 244K acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. Hard-freeze dates are county 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 Perry County's average, not your lot's — a low corner or a tree line moves it. Against Perry County's 220-day season, see what your own ground reads.
Heat in Perry County
Across a year, Perry County accumulates about 3,779 growing degree days above 50°F, about 623 more than the middle Indiana county — ahead of 83 of Indiana’s 92 counties. Degree days are the heat a crop actually gets to work with — more of them is more room to ripen a long-season crop before the freeze closes the window.
Grounded in PRISM Climate Group, Oregon State University — 1991–2020 monthly normals
Soil in Perry County
Across Perry County, the ground is predominantly Alfisols, where Adyeville, Ebal, and Tipsaw are the most extensive named soil series. The soil is generally somewhat excessively drained with a silt loam surface. Topsoil pH runs about 4.9–5.9, strongly acidic. Rainfall drains through hydrologic group C soils.
Soil order
Alfisols
Drainage
Somewhat excessively drained
Prime farmland
12%
Hydric soils
1%
Soil still varies lot by lot — soil types explained.
How the ground varies across Perry County
The USDA soil survey maps 52% of Perry County as somewhat excessively drained — but another 45% drains differently: 32% moderately well drained, 9% well drained.
Adyeville is the most extensive named soil at 19% of mapped acres, then Ebal (14%) and Tipsaw (10%).
Which of them your own lot sits on is a parcel question, not a county one. Check your address for the survey at your boundary.
What this means for growing in Perry County
Each reading below is measured for Perry County itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Drainage
MeasuredThe dominant soils across Perry County are somewhat excessively drained, in hydrologic group C — ground that drains quickly.
The upside is soil you can work early in spring and roots that never drown; the cost is that fast-draining ground dries out fast and leaches nutrients away before plants can use them.
Work in compost and mulch to hold moisture and feed, and water more often in short doses than deep and rarely.
USDA NRCS SSURGO
Surface pH
MeasuredTopsoil across Perry County runs about pH 4.9–5.9, on the acidic side.
Blueberries, potatoes, and rhododendrons thrive in it, but most vegetables start locking out nutrients below about pH 6.0 and grow pale and stunted no matter how much you feed them.
A measured lime application raises pH for the crops that need it — but test first, because the right rate depends on your own soil, not the county average.
USDA NRCS SSURGO
Season length
MeasuredPerry County runs about 220 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
MeasuredPerry County 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 Perry County is in
Perry County sits in the Interior Plateau — EPA Level III, inside the wider Eastern Temperate Forests. One consistent ecological setting across the whole county.
What Grows in Perry County
We scored all 1,086 plants against Perry County's own USDA zone 6b and its own 220-day season between hard freezes, using the same matching engine that runs a full parcel report. These cleared both. Sun, soil pH and drainage vary lot by lot — those are the parcel questions below. Each card opens that plant's Indiana profile.
Is it too late to plant in Perry County?
Too late for some crops, right on time for others — a growing season is a sequence, not a deadline. Cool-season crops can go in from around Mar 2; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 30 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 5 — long-season crops need about 90 days of runway, quick greens only 30. Here the season winds down slowly: late sowings, a real autumn harvest, and garlic in the ground before the first hard freeze.
Documented around Perry County
Survey cells within 31 miles of Perry County checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 102 miles off. What to watch for.
What gets applied to farmland in Perry County
USGS estimates 13,193 lb of Glyphosate on Perry County farmland in 2019, its largest by weight, ahead of Metolachlor & Metolachlor-s (8,148 lb) and Metolachlor-s (6,579 lb).
Farmland across the whole county, not any one lot. Check your address for the site-by-site record.
Safe to Grow Here?
What the federal record shows across Perry County — and how to grow with it.
We checked the federal record across Perry County — 139 documented sites across 5 of the 9 source types we track.
The most significant on record: 14 Toxics Release Inventory facilities. Active industrial facilities reporting chemical releases to air, water, and land.
The federal record across Perry County is a modest one — a typical footprint for a growing area. Nothing here calls for alarm; it's worth knowing which recorded sites sit closest to where you grow, and each one on the map carries its type and location. If one turns out to be a near neighbor, a one-time soil test settles the question.
Sources: EPA, USGS — 1.8M documented sites tracked nationwide across 9 federal source types.
What's on the federal record near Perry County
Closest first, across Perry County. Listing isn't leaking, and distance isn't exposure.
- SWISS HARDWOODS CORPORATIONUnderground Storage Tanks · 1.0 mi
- IN DOT DERBY UNIT 665 02Underground Storage Tanks · 1.4 mi
- INDOT DERBY UNIT 665 02Brownfields · 1.4 mi
- PERRY CENTRAL SCHOOL CORPORATIONUnderground Storage Tanks · 2.5 mi
- PERRY CENTRAL COMMUNITY SCHOOL CORPORATIONBrownfields · 2.5 mi
- GATCHELL MARKETUnderground Storage Tanks · 2.5 mi
- MRS PEARL SPRINKLEUnderground Storage Tanks · 2.6 mi
- HOWELLS GARAGE INCORPORATEDUnderground Storage Tanks · 2.7 mi
- GUILLAUME GROCERYUnderground Storage Tanks · 2.9 mi
- PERRY COUNTY HIGHWAY DEPARTMENT GARAGE 2Underground Storage Tanks · 3.8 mi
- PERRY COUNTY HIGHWAY DEPARTMENT GARAGE 3Underground Storage Tanks · 4.7 mi
- TELL CITY WATER DEPARTMENTPFAS · 4.8 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Perry County'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 Perry County.
Total Sites
139
across Perry County
Risk Level
Moderate
Highest-severity
14 Toxics Release Inventory facilities
Sources Checked
across Perry County
Severity Distribution
across Perry County
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Perry County, Toxics Release Inventory runs higher than the national average — 14 sites across Perry County. 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.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Check your specific parcel in Perry County
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 Perry County average
Your land is one point inside Perry County
Everything above resolves to Perry County as a whole — one PHZM band and one county frost record, read across 244K 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 county 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 county average.
Your Lot vs the Perry County Average
Perry County Average
- ●USDA Zones 6b, averaged across Perry County
- ●One soil character for all of Perry County
- ●Frost dates read at Perry County's scale: Mar 30 to Nov 5
YOUR Parcel
- ✓Your exact zone, not Perry County's 6b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your parcel in Perry County
Pull a site-specific report for your exact address in Perry County, Indiana — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Perry County averages can't show:
We read public map data around Perry County — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Perry County average
How we know this about Perry County
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at county grain; hard-freeze dates from NOAA 1991–2020 28°F normals at this county’s own record where one resolves, and the labelled statewide window where none does; soils from the USDA NRCS SSURGO survey, area-weighted across the county’s own map units; boundaries and acreage from US Census TIGER/Line 2025; the contamination and pesticide records from the federal sources named in their beats above. Where Perry County carries no record of its own, the figure is inherited and labelled — the resolution ledger below names each.
Common questions about Perry County
When does frost risk typically end in Perry County?
The last hard freeze (28°F) in Perry County typically lands around Mar 30, 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 20.
How long is the growing season in Perry County?
Measured between 28°F hard freezes, Perry County sees about 220 frost-free days — roughly Mar 30 through Nov 5, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 20 to Oct 22, about 185 days.
Is the soil safe to grow vegetables in Perry County?
The federal record around Perry County shows 139 documented sites, mostly Underground Storage Tanks entries (82), the nearest Underground Storage Tanks record about 1.0 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.
Everything above is measured at Perry County's scale — its 6b band and its 220-day season. Your yard writes its own version of Perry County's numbers: we read soil, sun, drainage and frost at your exact address. Try it for 14 days — no card required.
Will It Grow Here?
Zone fit is the first question — each answer below reads Indiana's frost window, season length, and soil profile against the plant's real requirements.
What this page reads at Perry County’s own scale
8 of the readings below were taken at Perry County's own scale — its own ~220-day span between 28°F freezes, the 3 most extensive soil series mapped here and 139 documented sites inside its boundary; one is borrowed from a wider read, named and linked below.
Measured here
- Perry County's own USDA hardiness band, zones 6bUSDA PHZM 2023
- Perry County's own 28°F hard-freeze dates and its ~220-day span between themNOAA 1991–2020 Climate Normals
- The soil order, drainage, surface pH, and the 3 most extensive named soil series mapped in Perry CountyUSDA NRCS SSURGO
- 139 documented contamination sites inside the county boundary, distance-sorted from its center — the closest Underground Storage Tanks record about 1.0 miles outFederal environmental registers
- Perry County's boundary and the 244,313 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6b and a ~220-day seasonGrowable Ground crop-matching engine
- Perry County sitting wholly inside the Interior PlateauUS EPA Level III Ecoregions
- Which agricultural compounds go onto Perry County farmland, and roughly how muchUSGS NAWQA EPest county estimates
Inherited from a wider read
- The growing challenges every Indiana grower plans around — written at state scale, so they stay on the state guidefrom Indiana
What this page can’t tell you
- How the season shifts across Perry County — the ~220 days above is one reading at its centre; the 12 towns below each carry their owntowns in this county →
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Perry County's 244,313 acreswhy one lot differs from the next →
- Which of those 139 documented sites actually reaches your soil — that needs your address, the wind, and the groundwater directionhow we read the record →
- Where cold air settles, which slopes face the sun, and which way the wind runs on your own ground — none of it survives being averaged over Perry Countyread your own land →