Estill County, in Kentucky, sits in USDA hardiness zone 6b — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
These conditions suit pawpaw, tomato, blackberry, and redbud — a starting list any specific site will trim or extend with its own soil, sun, and drainage.
Estill County lies within Appalachia — a regional growing area with its own character.
Grounded in USDA PHZM 2023 · Growable Ground suitability scoring · NOAA 1991–2020 Climate Normals
Estill County holds more than one microclimate.
Soils and elevations shift across Estill County, so your frost dates and drainage aren't the county average. Enter your address and we'll score 1,112 plants against your land's actual soil, sun, and frost.
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
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Quick Facts
USDA Zones
6b
Last Hard Freeze (28°F)
Mar 4
County normal — light frosts run a few weeks later
First Hard Freeze (28°F)
Nov 29
County normal — light frosts arrive a few weeks earlier
County Area
162K acres
Hardiness Zone Range
Zone maps are averages across Estill County. Your yard's slope, trees, and frost pockets shift what actually grows — see your land's exact reading.
Soil in Estill County
Across Estill County, the ground is predominantly Ultisols, where Bledsoe, Shelocta, and Gilpin are the most extensive named soil series. The soil is generally well drained with a silt loam surface. Topsoil pH runs about 5.4–6.4, moderately acidic. Rainfall drains through hydrologic group C soils.
Soil order
Ultisols
Drainage
Well drained
Prime farmland
5%
Hydric soils
1%
Soil still varies lot by lot — soil types explained.
What Grows in Estill County
Plants matched to Estill County's USDA zones 6b — each links to its full growing profile.
Is it too late to plant in Estill County?
Rarely: the season closes in stages, not all at once, and each stage has its crops. Cool-season crops can go in from around Feb 4; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 4 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 29 — long-season crops need about 90 days of runway, quick greens only 30. Here the calendar nearly circles: cool-season crops take the winter shift, and the next window is always close.
Growing Challenges in Kentucky
What an experienced grower plans around here — each one has a move.
Heavy clay soils in the Bluegrass region
Bluegrass clay opens up with steady compost — or start above it in a raised bed and grow while the ground improves.
High humidity promotes fungal diseases
Space wide, water mornings at the base, and favor resistant varieties — your extension's disease-resistant lists earn their keep here.
Karst topography creates drainage unpredictability
Karst ground drains erratically — watch where water goes in a hard rain before siting beds, and mound up where it lingers.
For cultivar selection, pest pressure, and planting-time guidance specific to Kentucky, the University of Kentucky Cooperative Extension is the authoritative local source.
Safe to Grow Here?
What the federal record shows across Estill County — and how to grow with it.
We checked the federal record across Estill County — 102 documented sites across 5 of the 9 source types we track.
The most significant on record: 1 Toxics Release Inventory facility. Active industrial facilities reporting chemical releases to air, water, and land.
The federal record across Estill 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.
Environmental Intelligence
Understanding what's nearby helps you make informed decisions about where and how to grow.
Total Sites
102
across Estill County
Risk Level
Moderate
Highest-severity
1 Toxics Release Inventory facility
Sources Checked
across Estill County
Severity Distribution
across Estill County
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Estill County, Underground Storage Tanks runs higher than the national average — 90 sites nearby. Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
Underground Storage Tanks: Underground storage tanks are the single most common source of soil contamination near homes and gardens.
Use raised beds with imported soil — this eliminates the primary soil-contact pathway.
Check your specific parcel in Estill County
Get exact proximity distances to contamination sources for your specific parcel — plus soil, sun, drainage, and 1,112 plant recommendations.
Three things about your exact spot that zone averages miss:
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources analyzed in seconds
Your Specific Parcel Matters
Estill County Average
- ●USDA Zones 6b
- ●Generic soil type for the area
- ●State-average frost dates
YOUR Parcel
- ✓Your exact hardiness zone
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your parcel in Estill County
Pull a site-specific report for your exact address in Estill County, Kentucky — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your exact spot that zone averages miss:
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources analyzed in seconds
Key Growing Facts for Estill County, Kentucky
- USDA Hardiness Zones: 6b (USDA PHZM 2023)
- Last Hard Freeze (28°F): Mar 4 (county normal, NOAA 1991–2020 Climate Normals — light frosts can follow for a few weeks)
- First Hard Freeze (28°F): Nov 29 (county normal, NOAA 1991–2020 Climate Normals — light frosts can arrive a few weeks earlier)
- Days Between Hard Freezes: ~270 (county normal, NOAA 1991–2020 Climate Normals)
- County Land Area: 162K acres (US Census TIGER 2025)
Zone data: USDA ARS Plant Hardiness Zone Map 2023. Climate data: NOAA NCEI. County boundaries: US Census TIGER/Line 2025.
Frost dates here are the Estill County average. Low spots and tree cover move them by days on any one yard — see your exact frost windows.
Frequently Asked Questions
What hardiness zone is Estill County, Kentucky?
Estill County sits in USDA hardiness zone 6b, per the USDA Plant Hardiness Zone Map 2023. Zones reflect average annual extreme minimum temperatures from 1991–2020 weather data.
Is it too late to plant in Estill County?
Rarely: the season closes in stages, not all at once, and each stage has its crops. Cool-season crops can go in from around Feb 4; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 4 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 29 — long-season crops need about 90 days of runway, quick greens only 30. Here the calendar nearly circles: cool-season crops take the winter shift, and the next window is always close.
When does frost risk typically end in Estill County?
The last hard freeze (28°F) in Estill County typically lands around Mar 4, per NOAA 1991–2020 climate normals — an earlier marker than the light-frost dates many planting charts quote. That marks the hard freeze, not the last light frost — light frosts can still bite for a few more weeks, so tender transplants usually wait another 2–3 weeks.
How long is the growing season in Estill County?
Measured between 28°F hard freezes, Estill County sees about 270 frost-free days — roughly Mar 4 through Nov 29, per NOAA 1991–2020 climate normals. Tender crops get a somewhat shorter practical window, since lighter frosts reach a few weeks past the hard-freeze dates on both ends.
What vegetables grow in Estill County?
Estill County's zone 6b supports a wide range — strong performers include Pawpaw, Tomato, Blackberry, Redbud, and Kentucky Bluegrass. What actually takes on any one site comes down to its soil, sun, and drainage, and we score each plant against the real conditions at your address.
Which hardiness zone is Estill County, really?
Officially, Estill County sits in USDA zone 6b (USDA PHZM 2023) — but a zone is a 30-year average of winter's coldest night across an area, and it can't see any one yard. A south-facing slope, a tree line, or a low frost pocket can shift a single site by half a zone either way, which is why neighboring gardeners often quote different numbers. We read the conditions at your exact address — soil, sun, slope, and frost — and score 1,112 plants against what's actually there.
Is the soil safe to grow vegetables in Estill County?
The federal record around Estill County shows 102 documented sites — 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.
Just moved to Estill County — what should I know before planting?
Start with three facts. Estill County sits in USDA zone 6b, which sets what survives winter; the last 28°F hard freeze typically clears around Mar 4, with about 270 frost-free days to work with (NOAA 1991–2020 climate normals); and 102 documented sites sit on the federal record — a typical footprint for a growing area, worth a look on the contamination map before food beds. From there, matching plants to your actual soil and sun is the fun part.
Everything on this page is a Estill County average. Your yard writes its own version — 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 Kentucky's frost window, season length, and soil profile against the plant's real requirements.