What Grows in Hopkins County, Kentucky

USDA Zones 7a · 347K acres

Hopkins County, in Kentucky, sits in USDA hardiness zone 7a — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.

Crops well matched to these conditions include pawpaw, tomato, blackberry, and redbud — though what thrives on any one site still turns on its specific soil, sun, and drainage.

Grounded in USDA PHZM 2023 · Growable Ground suitability scoring · NOAA 1991–2020 Climate Normals

Score your parcel · free

Hopkins County holds more than one microclimate.

Soils and elevations shift across Hopkins 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.

No card required · your full report in seconds

Quick Facts

USDA Zones

7a

Last Hard Freeze (28°F)

Feb 24

County normal — light frosts run a few weeks later

First Hard Freeze (28°F)

Dec 6

County normal — light frosts arrive a few weeks earlier

County Area

347K acres

Hardiness Zone Range

7a7a
3a (Cold)13b (Hot)

Zone maps are averages across Hopkins County. Your yard's slope, trees, and frost pockets shift what actually grows — see your land's exact reading.

Soil in Hopkins County

Across Hopkins County, the ground is predominantly Alfisols, where Zanesville, Hosmer, and Belknap are the most extensive named soil series. The soil is generally moderately well drained with a silt loam surface. Topsoil pH runs about 5.5–5.9, moderately acidic. Rainfall drains through hydrologic group C soils.

Soil order

Alfisols

Drainage

Moderately well drained

Prime farmland

20%

Hydric soils

16%

Soil still varies lot by lot — soil types explained.

Is it too late to plant in Hopkins County?

For most of the year, no — what changes is which crops still fit the days remaining. Cool-season crops can go in from around Jan 27; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Feb 24 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 6 — long-season crops need about 90 days of runway, quick greens only 30. In a climate this gentle, “too late” hardly applies — the question becomes which crops prefer the cooler months ahead.

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 Hopkins County — and how to grow with it.

Federal record: Elevated

We checked the federal record across Hopkins County361 documented sites across 5 of the 9 source types we track.

The most significant on record: 17 Toxics Release Inventory facilities. Active industrial facilities reporting chemical releases to air, water, and land.

There's a meaningful federal record across Hopkins County — worth a look before you plant food, not a reason to hold back from growing. Proximity to a documented site is information, not a diagnosis of any one yard. A soil test before new food beds is the sensible precaution here, and the map shows exactly which sites sit where, so you can see what's actually near you.

Sources: EPA, USGS1.8M 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

361

across Hopkins County

Risk Level

Elevated

Highest-severity

17 Toxics Release Inventory facilities

Severity Distribution

across Hopkins County

High2Moderate143Low216

Highest-Severity Sites

Madisonville Light & Water
PFAS Sampling · PFAS Detected
South Hopkins Water District
PFAS Sampling · PFAS Detected
Ahlstrom Filtration LLC
Toxics Release Inventory · 4243whlstr215ne
Ahlstrom Filtration LLC
Toxics Release Inventory · 42431FLTRTHIGHW
Ahlstrom-Munksjo Filtration LLC
Underground Storage Tanks · Open UST(S)

A note from Gnorman

What an experienced grower watches for around here

In and around Hopkins County, two things run higher than the national average — PFAS (4 sites) and Underground Storage Tanks (238 sites). Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.

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.

Free Report

Check your specific parcel in Hopkins 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:

Your soil pHYour frost-free daysYour sun & shade

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

Hopkins County Average

  • USDA Zones 7a
  • 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

Free Report

Read your parcel in Hopkins County

Pull a site-specific report for your exact address in Hopkins County, Kentucky — soil, sun, drainage, frost risk, and scored plant recommendations.

Three things about your exact spot that zone averages miss:

Your soil pHYour frost-free daysYour sun & shade

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 Hopkins County, Kentucky

  • USDA Hardiness Zones: 7a (USDA PHZM 2023)
  • Last Hard Freeze (28°F): Feb 24 (county normal, NOAA 1991–2020 Climate Normals — light frosts can follow for a few weeks)
  • First Hard Freeze (28°F): Dec 6 (county normal, NOAA 1991–2020 Climate Normals — light frosts can arrive a few weeks earlier)
  • Days Between Hard Freezes: ~285 (county normal, NOAA 1991–2020 Climate Normals)
  • County Land Area: 347K 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 Hopkins 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 Hopkins County, Kentucky?

Hopkins County sits in USDA hardiness zone 7a, 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 Hopkins County?

For most of the year, no — what changes is which crops still fit the days remaining. Cool-season crops can go in from around Jan 27; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Feb 24 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 6 — long-season crops need about 90 days of runway, quick greens only 30. In a climate this gentle, “too late” hardly applies — the question becomes which crops prefer the cooler months ahead.

When does frost risk typically end in Hopkins County?

The last hard freeze (28°F) in Hopkins County typically lands around Feb 24, 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 Hopkins County?

Measured between 28°F hard freezes, Hopkins County sees about 285 frost-free days — roughly Feb 24 through Dec 6, 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 Hopkins County?

Hopkins County's zone 7a 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 Hopkins County, really?

Officially, Hopkins County sits in USDA zone 7a (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 Hopkins County?

The federal record around Hopkins County is a meaningful one — 361 documented sites — 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.

Just moved to Hopkins County — what should I know before planting?

Start with three facts. Hopkins County sits in USDA zone 7a, which sets what survives winter; the last 28°F hard freeze typically clears around Feb 24, with about 285 frost-free days to work with (NOAA 1991–2020 climate normals); and 361 documented sites sit on the federal record here, so a soil test before food beds is the smart first step. From there, matching plants to your actual soil and sun is the fun part.

Everything on this page is a Hopkins 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.