Walton, 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.
Among the crops suited to this profile: cabbage, hazelnut, lavender, and collard greens. The site-level story — soil, sun, drainage — decides the rest.
Even in Walton, 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 Walton 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 Walton — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Walton — the short answer
Walton, Kentucky: USDA zone 6b, about 224 days between hard freezes, across 3K acres of city.
- USDA zone
- 6b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 31
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 10
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~224
- 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 Walton's average, not your lot's — a low corner or a tree line moves it. Against Walton's 224-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Walton
Each reading below is measured for Walton itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredWalton runs about 224 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
MeasuredWalton 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 Walton is in
Walton sits in the Interior Plateau — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Walton's own centroid rather than borrowed from Boone County.
What Grows in Walton
Every plant below cleared Walton's own zone 6b and its 224-day season. Each card opens that plant's Kentucky profile. How we score.
Is it too late to plant in Walton?
Rarely: the season closes in stages, not all at once, and each stage has its crops. Cool-season crops can go in from around Mar 3; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 31 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 10 — long-season crops need about 90 days of runway, quick greens only 30. There is slack in a calendar like this — late plantings, second rounds of favorites, and a fall bench that keeps beds working.
Documented around Walton
Spotted lanternfly documented 11 miles from Walton, first recorded 2023. What to watch for.
What's on the federal record near Walton
Closest first, within ~10 miles of Walton. Listing isn't leaking, and distance isn't exposure.
- Walton Verona High SchoolUnderground Storage Tanks · 800 ft
- Northern Ky Tractor CoUnderground Storage Tanks · 850 ft
- Walton Public Utility StaUnderground Storage Tanks · 1600 ft
- Parcel 16 Item No 6-133.0Underground Storage Tanks · 1800 ft
- Landrum Service StationUnderground Storage Tanks · 1900 ft
- KROGER CO- STORE 367-14Brownfields · 1900 ft
- McElroys BP Carryout LLCUnderground Storage Tanks · 2000 ft
- Jay GroceryUnderground Storage Tanks · 2000 ft
- Walton MarathonUnderground Storage Tanks · 2100 ft
- Kroger 367Underground Storage Tanks · 2200 ft
- QUALITY FOREST PRODUCTS INCBrownfields · 2300 ft
- QUALITY FOREST PRODUCTS INCToxics Release Inventory · 2300 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Walton'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 Walton.
Total Sites
341
within ~10 miles of Walton
Risk Level
Elevated
Highest-severity
1 Superfund site (none NPL-listed)
Sources Checked
within ~10 miles of Walton
Severity Distribution
within ~10 miles of Walton
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Walton, two things run higher than the national average within ~10 miles of Walton — Toxics Release Inventory (51 sites) and PFAS (6 sites). 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.
PFAS: PFAS (per- and polyfluoroalkyl substances) are called "forever chemicals" because they do not biodegrade.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Test irrigation water source — this is the primary pathway for PFAS to reach garden crops.
Check your specific parcel in Walton
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 Walton average
Your land is one point inside Walton
Everything above resolves to Walton 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 Walton Average
Walton Average
- ●USDA Zones 6b, averaged across Walton
- ●One soil character for all of Walton
- ●Frost dates read at Walton's scale: Mar 31 to Nov 10
YOUR Parcel
- ✓Your exact zone, not Walton's 6b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Walton
Pull a site-specific report for your exact address in Walton, Kentucky — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Walton averages can't show:
We read public map data around Walton — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Walton average
How we know this about Walton
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 Walton’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 Walton
When does frost risk typically end in Walton?
The last hard freeze (28°F) in Walton typically lands around Mar 31, 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 21.
When is the first frost in Walton?
The first hard freeze (28°F) in Walton typically arrives around Nov 10, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 27, so the watching starts about Oct 11 — about 224 days after the spring freeze cleared.
How long is the growing season in Walton?
Measured between 28°F hard freezes, Walton sees about 224 frost-free days — roughly Mar 31 through Nov 10, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 21 to Oct 27, about 189 days.
Is the soil safe to grow vegetables in Walton?
The federal record around Walton is a meaningful one — 341 documented sites, mostly Underground Storage Tanks entries (211), 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 Walton?
From about Oct 11 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 10 (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 10. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Walton's scale — its 6b band and its 224-day season. Your yard writes its own version of Walton'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 Walton’s own scale
7 of the readings below were taken at Walton's own scale — its own ~224-day season between 28°F freezes, the 3,043 acres it covers and 341 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Walton's own USDA hardiness band, zones 6bUSDA PHZM 2023
- Walton's own 28°F hard-freeze dates, about Mar 31 and Nov 10 and the ~224-day span between themNOAA 1991–2020 Climate Normals
- 341 documented contamination sites on the federal record near Walton, the closest Underground Storage Tanks record about 0.2 miles out from the town centreFederal environmental registers
- Walton's boundary and the 3,043 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6b and a ~224-day seasonGrowable Ground crop-matching engine
- The ecoregion at Walton's own centroid, the Interior PlateauUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Waltonlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Walton's 3,043 acres read through its county's SSURGO summaryfrom Boone County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Boone County
- The growing challenges every Kentucky grower plans around — written at state scale, so they stay on the state guidefrom Kentucky
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Boone County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Walton's 3,043 acreswhy one lot differs from the next →
- Which side of Walton you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 3,043 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 Walton-wide figureread your own land →
More in Kentucky
Growing region
Nearby growing guides