LeRoy, Kansas, sits in USDA hardiness zone 6b — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
The conditions favor cabbage, hazelnut, lavender, and collard greens, among others — though every individual site edits that list with its own soil, sun, and drainage.
Even in LeRoy, 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 LeRoy 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 LeRoy — soil, climate, flood, and parcel records. How we handle your address.
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LeRoy — the short answer
LeRoy, Kansas: USDA zone 6b, about 220 days between hard freezes, across 527 acres of city.
- USDA zone
- 6b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 30
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 5
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~220
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 527 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 LeRoy's average, not your lot's — a low corner or a tree line moves it. Against LeRoy's 220-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in LeRoy
Each reading below is measured for LeRoy itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredLeRoy 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
MeasuredLeRoy 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 LeRoy is in
LeRoy sits in the Central Irregular Plains — EPA Level III, inside the wider Great Plains. That is read at LeRoy's own centroid rather than borrowed from Coffey County.
What Grows in LeRoy
Every plant below cleared LeRoy's own zone 6b and its 220-day season. Each card opens that plant's Kansas profile. How we score.
Is it too late to plant in LeRoy?
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 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. There is slack in a calendar like this — late plantings, second rounds of favorites, and a fall bench that keeps beds working.
What's on the federal record near LeRoy
Closest first, within ~10 miles of LeRoy. Listing isn't leaking, and distance isn't exposure.
- SUTHERLAND FARMUnderground Storage Tanks · 1000 ft
- BOB'S BUS COMPANYUnderground Storage Tanks · 1100 ft
- LUNEY'S GARAGE & SERVICEUnderground Storage Tanks · 1300 ft
- LE ROY COOP ASSOCIATIONUnderground Storage Tanks · 1500 ft
- LEROY COOP TIRE SVCBrownfields · 1500 ft
- COFFEY CO JOINT 5 FIRE DISTRICUnderground Storage Tanks · 1600 ft
- SOBERAY MACHINE & EQUIPMENTBrownfields · 1600 ft
- SLAGEL, RAYMOND LUnderground Storage Tanks · 2000 ft
- 23S 16E 11DBB 01Nitrate · 1.8 mi
- PAUL M WILLIAMSBrownfields · 2.4 mi
- 22S 17E 33CDD 01Nitrate · 4.7 mi
- 24S 17E 06ADD 01Nitrate · 7.3 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from LeRoy'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 LeRoy.
Total Sites
51
within ~10 miles of LeRoy
Risk Level
Moderate
Highest-severity
2 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of LeRoy
Severity Distribution
within ~10 miles of LeRoy
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around LeRoy, Nitrate runs higher than the national average — 18 sites within ~10 miles of LeRoy. Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in LeRoy
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 LeRoy average
Your land is one point inside LeRoy
Everything above resolves to LeRoy as a whole — one PHZM band and one 28°F frost record, read across 527 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 LeRoy Average
LeRoy Average
- ●USDA Zones 6b, averaged across LeRoy
- ●One soil character for all of LeRoy
- ●Frost dates read at LeRoy's scale: Mar 30 to Nov 5
YOUR Parcel
- ✓Your exact zone, not LeRoy's 6b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in LeRoy
Pull a site-specific report for your exact address in LeRoy, Kansas — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that LeRoy averages can't show:
We read public map data around LeRoy — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the LeRoy average
How we know this about LeRoy
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 LeRoy’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 LeRoy
When does frost risk typically end in LeRoy?
The last hard freeze (28°F) in LeRoy 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.
When is the first frost in LeRoy?
The first hard freeze (28°F) in LeRoy typically arrives around Nov 5, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 22, so the watching starts about Oct 6 — about 220 days after the spring freeze cleared.
How long is the growing season in LeRoy?
Measured between 28°F hard freezes, LeRoy 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 LeRoy?
The federal record around LeRoy shows 51 documented sites, mostly Underground Storage Tanks entries (24), the nearest Underground Storage Tanks record about 0.2 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.
How do I protect my plants from frost in LeRoy?
From about Oct 6 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 5 (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 5. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at LeRoy's scale — its 6b band and its 220-day season. Your yard writes its own version of LeRoy'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 LeRoy’s own scale
6 of the readings below were taken at LeRoy's own scale — its own ~220-day season between 28°F freezes, the 527 acres it covers and 51 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- LeRoy's own USDA hardiness band, zones 6bUSDA PHZM 2023
- LeRoy's own 28°F hard-freeze dates, about Mar 30 and Nov 5 and the ~220-day span between themNOAA 1991–2020 Climate Normals
- 51 documented contamination sites on the federal record near LeRoy, the closest Underground Storage Tanks record about 0.2 miles out from the town centreFederal environmental registers
- LeRoy's boundary and the 527 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6b and a ~220-day seasonGrowable Ground crop-matching engine
- The ecoregion at LeRoy's own centroid, the Central Irregular PlainsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so LeRoy's 527 acres read through its county's SSURGO summaryfrom Coffey County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Coffey County
- The growing challenges every Kansas grower plans around — written at state scale, so they stay on the state guidefrom Kansas
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Coffey County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among LeRoy's 527 acreswhy one lot differs from the next →
- Which side of LeRoy you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 527 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 LeRoy-wide figureread your own land →
More in Kansas
Wider growing context
What grows across KansasLeRoy sits outside our named growing regions, so Kansas as a whole is its closest context here.
Nearby growing guides