Washington Court House, Ohio, sits in USDA hardiness zone 6b — a zone band wide enough that plant choice, not possibility, is the interesting question.
On paper, cabbage, hazelnut, lavender, and collard greens all suit these conditions — on the ground, soil, sun, and drainage make the final call.
Even in Washington Court House, 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 Washington Court House 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 Washington Court House — soil, climate, flood, and parcel records. How we handle your address.
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Washington Court House — the short answer
Washington Court House, Ohio: USDA zone 6b, about 211 days between hard freezes, across 6K acres of city.
- USDA zone
- 6b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 7
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 4
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~211
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 6K 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 Washington Court House's average, not your lot's — a low corner or a tree line moves it. Against Washington Court House's 211-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Washington Court House
Each reading below is measured for Washington Court House itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredWashington Court House runs about 211 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
MeasuredWashington Court House 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 Washington Court House is in
Washington Court House sits in the Eastern Corn Belt Plains — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Washington Court House's own centroid rather than borrowed from Fayette County.
What Grows in Washington Court House
Every plant below cleared Washington Court House's own zone 6b and its 211-day season. Each card opens that plant's Ohio profile. How we score.
Is it too late to plant in Washington Court House?
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 10; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 7 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 4 — 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 Washington Court House
Survey cells within 31 miles of Washington Court House checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 32 miles off. What to watch for.
What's on the federal record near Washington Court House
Closest first, within ~10 miles of Washington Court House. Listing isn't leaking, and distance isn't exposure.
- WASHINGTON WASTEWATER PLANTUnderground Storage Tanks · 1300 ft
- EZ OIL CHANGE INCBrownfields · 1800 ft
- Bell's Service StationUnderground Storage Tanks · 1900 ft
- BELL'S SHELL SERVICEBrownfields · 1900 ft
- SHERWIN-WILLIAMS #1114Brownfields · 2000 ft
- KIRKS AUTO PARTS INCBrownfields · 2000 ft
- SUNSHINE CENTERBrownfields · 2100 ft
- FAMILY DOLLAR #2673Brownfields · 2100 ft
- FLAGWAY #2Underground Storage Tanks · 2100 ft
- RICH OIL, INC. #3734Underground Storage Tanks · 2200 ft
- MORROW FUNERAL HOMEUnderground Storage Tanks · 2500 ft
- MOBILUnderground Storage Tanks · 2600 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Washington Court House'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 Washington Court House.
Total Sites
124
within ~10 miles of Washington Court House
Risk Level
Moderate
Highest-severity
15 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of Washington Court House
Severity Distribution
within ~10 miles of Washington Court House
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Washington Court House, Toxics Release Inventory runs higher than the national average — 15 sites within ~10 miles of Washington Court House. That's not a problem with your land — it's information about it.
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 Washington Court House
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 Washington Court House average
Your land is one point inside Washington Court House
Everything above resolves to Washington Court House as a whole — one PHZM band and one 28°F frost record, read across 6K 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 Washington Court House Average
Washington Court House Average
- ●USDA Zones 6b, averaged across Washington Court House
- ●One soil character for all of Washington Court House
- ●Frost dates read at Washington Court House's scale: Apr 7 to Nov 4
YOUR Parcel
- ✓Your exact zone, not Washington Court House's 6b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Washington Court House
Pull a site-specific report for your exact address in Washington Court House, Ohio — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Washington Court House averages can't show:
We read public map data around Washington Court House — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Washington Court House average
How we know this about Washington Court House
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 Washington Court House’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 Washington Court House
When does frost risk typically end in Washington Court House?
The last hard freeze (28°F) in Washington Court House typically lands around Apr 7, 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 28.
When is the first frost in Washington Court House?
The first hard freeze (28°F) in Washington Court House typically arrives around Nov 4, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 21, so the watching starts about Oct 5 — about 211 days after the spring freeze cleared.
How long is the growing season in Washington Court House?
Measured between 28°F hard freezes, Washington Court House sees about 211 frost-free days — roughly Apr 7 through Nov 4, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 28 to Oct 21, about 176 days.
Is the soil safe to grow vegetables in Washington Court House?
The federal record around Washington Court House shows 124 documented sites, mostly Underground Storage Tanks entries (56), 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 Washington Court House?
From about Oct 5 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 4 (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 4. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Washington Court House's scale — its 6b band and its 211-day season. Your yard writes its own version of Washington Court House'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 Washington Court House’s own scale
7 of the readings below were taken at Washington Court House's own scale — its own ~211-day season between 28°F freezes, the 5,763 acres it covers and 124 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Washington Court House's own USDA hardiness band, zones 6bUSDA PHZM 2023
- Washington Court House's own 28°F hard-freeze dates, about Apr 7 and Nov 4 and the ~211-day span between themNOAA 1991–2020 Climate Normals
- 124 documented contamination sites on the federal record near Washington Court House, the closest Underground Storage Tanks record about 0.2 miles out from the town centreFederal environmental registers
- Washington Court House's boundary and the 5,763 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6b and a ~211-day seasonGrowable Ground crop-matching engine
- The ecoregion at Washington Court House's own centroid, the Eastern Corn Belt PlainsUS EPA Level III Ecoregions
- Lanternfly survey cells around Washington Court House checked, none carrying a detectionlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Washington Court House's 5,763 acres read through its county's SSURGO summaryfrom Fayette County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Fayette County
- The growing challenges every Ohio grower plans around — written at state scale, so they stay on the state guidefrom Ohio
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Fayette County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Washington Court House's 5,763 acreswhy one lot differs from the next →
- Which side of Washington Court House you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 5,763 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 Washington Court House-wide figureread your own land →
More in Ohio
Wider growing context
What grows across OhioWashington Court House sits outside our named growing regions, so Ohio as a whole is its closest context here.
Nearby growing guides