Uniontown, Pennsylvania, sits in USDA hardiness zone 6b — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
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 Uniontown, 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 Uniontown 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 Uniontown — soil, climate, flood, and parcel records. How we handle your address.
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Uniontown — the short answer
Uniontown, Pennsylvania: USDA zone 6b, about 200 days between hard freezes, across 1K acres of city.
- USDA zone
- 6b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 14
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 31
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~200
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 1K 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 Uniontown's average, not your lot's — a low corner or a tree line moves it. Against Uniontown's 200-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Uniontown
Each reading below is measured for Uniontown itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredUniontown runs about 200 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
MeasuredUniontown 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 Uniontown is in
Uniontown sits in the Western Allegheny Plateau — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Uniontown's own centroid, and it is not what its county reads: Fayette County is mostly Central Appalachians. The wider page above you is answering a different question about different ground.
What Grows in Uniontown
Every plant below cleared Uniontown's own zone 6b and its 200-day season. Each card opens that plant's Pennsylvania profile. How we score.
Is it too late to plant in Uniontown?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Mar 17; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 14 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 31 — 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 Uniontown
Spotted lanternfly documented 2 miles from Uniontown, first recorded 2019. What to watch for.
What's on the federal record near Uniontown
Closest first, within ~10 miles of Uniontown. Listing isn't leaking, and distance isn't exposure.
- HAGAN ICE CREAM COUnderground Storage Tanks · 50 ft
- CRH CATERINGBrownfields · 100 ft
- HEARLD STANDARDBrownfields · 350 ft
- CTL SCHUnderground Storage Tanks · 350 ft
- BURKE BUS LINESUnderground Storage Tanks · 400 ft
- JOBYS GULFUnderground Storage Tanks · 500 ft
- US POSTAL SVCUnderground Storage Tanks · 600 ft
- PTAKS FORMAL WEAR INC/UNIONTOWNBrownfields · 800 ft
- STEWART COLLISION SERVICEBrownfields · 800 ft
- ASHLAND BULK PLT 956Underground Storage Tanks · 950 ft
- THEODORE R SMITH TRUCKINGUnderground Storage Tanks · 950 ft
- KOLENCIK SVC STAUnderground Storage Tanks · 950 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Uniontown'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 Uniontown.
Total Sites
391
within ~10 miles of Uniontown
Risk Level
Elevated
Highest-severity
13 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of Uniontown
Severity Distribution
within ~10 miles of Uniontown
Highest-Severity Sites
Know Before You Grow
- •Underground tanks leak petroleum as they age — near a former filling station, test the soil.
- •Near a brownfield, raised beds of imported soil give your food clean ground.
- •TRI facilities report what they release. Check the wind — downwind beds catch more of it.
Check your specific parcel in Uniontown
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 Uniontown average
Your land is one point inside Uniontown
Everything above resolves to Uniontown as a whole — one PHZM band and one 28°F frost record, read across 1K 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 Uniontown Average
Uniontown Average
- ●USDA Zones 6b, averaged across Uniontown
- ●One soil character for all of Uniontown
- ●Frost dates read at Uniontown's scale: Apr 14 to Oct 31
YOUR Parcel
- ✓Your exact zone, not Uniontown's 6b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Uniontown
Pull a site-specific report for your exact address in Uniontown, Pennsylvania — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Uniontown averages can't show:
We read public map data around Uniontown — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Uniontown average
How we know this about Uniontown
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 Uniontown’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 Uniontown
When does frost risk typically end in Uniontown?
The last hard freeze (28°F) in Uniontown typically lands around Apr 14, 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 May 5.
When is the first frost in Uniontown?
The first hard freeze (28°F) in Uniontown typically arrives around Oct 31, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 17, so the watching starts about Oct 1 — about 200 days after the spring freeze cleared.
How long is the growing season in Uniontown?
Measured between 28°F hard freezes, Uniontown sees about 200 frost-free days — roughly Apr 14 through Oct 31, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 5 to Oct 17, about 165 days.
Is the soil safe to grow vegetables in Uniontown?
The federal record around Uniontown is a meaningful one — 391 documented sites, mostly Underground Storage Tanks entries (220), the nearest Underground Storage Tanks record under a tenth of a mile 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 Uniontown?
From about Oct 1 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 Oct 31 (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 Oct 31. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Uniontown's scale — its 6b band and its 200-day season. Your yard writes its own version of Uniontown'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 Uniontown’s own scale
7 of the readings below were taken at Uniontown's own scale — its own ~200-day season between 28°F freezes, the 1,312 acres it covers and 391 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Uniontown's own USDA hardiness band, zones 6bUSDA PHZM 2023
- Uniontown's own 28°F hard-freeze dates, about Apr 14 and Oct 31 and the ~200-day span between themNOAA 1991–2020 Climate Normals
- 391 documented contamination sites on the federal record near Uniontown, the closest Underground Storage Tanks record under a tenth of a mile out from the town centreFederal environmental registers
- Uniontown's boundary and the 1,312 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6b and a ~200-day seasonGrowable Ground crop-matching engine
- Uniontown sits in the Western Allegheny Plateau — not the ecoregion its county mostly readsUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Uniontownlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Uniontown's 1,312 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 Pennsylvania grower plans around — written at state scale, so they stay on the state guidefrom Pennsylvania
- 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 Uniontown's 1,312 acreswhy one lot differs from the next →
- Which side of Uniontown you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,312 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record under a tenth of a mile 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 Uniontown-wide figureread your own land →
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