Fredonia, Pennsylvania, sits in USDA hardiness zone 6a — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
Reliable performers under these conditions include cabbage, hazelnut, lavender, and collard greens; what your own ground favors still comes down to its soil, sun, and drainage.
Even in Fredonia, 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 Fredonia 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 Fredonia — soil, climate, flood, and parcel records. How we handle your address.
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Fredonia — the short answer
Fredonia, Pennsylvania: USDA zone 6a, about 197 days between hard freezes, across 228 acres of town.
- USDA zone
- 6a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 20
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 3
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~197
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 228 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 6a is Fredonia's average, not your lot's — a low corner or a tree line moves it. Against Fredonia's 197-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Fredonia
Each reading below is measured for Fredonia itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredFredonia runs about 197 days between hard freezes — a moderate growing season.
There is room for the full run of cool-season crops plus a warm-season main crop, but the calendar is tight enough that a late spring or early fall frost still decides how much finishes.
Time warm-season transplants to your last hard freeze, and a few weeks of season extension turns a near-miss harvest into a sure one.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredFredonia sits in USDA hardiness zone 6a.
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 Fredonia is in
Fredonia sits in the Erie Drift Plain — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Fredonia's own centroid rather than borrowed from Mercer County.
What Grows in Fredonia
Every plant below cleared Fredonia's own zone 6a and its 197-day season. Each card opens that plant's Pennsylvania profile. How we score.
Is it too late to plant in Fredonia?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Mar 23; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 20 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 3 — long-season crops need about 90 days of runway, quick greens only 30. Even past midsummer there is room for a true fall garden here, and garlic planted near the close carries the momentum into next year.
Documented around Fredonia
Spotted lanternfly documented 2 miles from Fredonia, first recorded 2023. What to watch for.
What's on the federal record near Fredonia
Closest first, within ~10 miles of Fredonia. Listing isn't leaking, and distance isn't exposure.
- THOMAS SVCUnderground Storage Tanks · 250 ft
- AMER STONE MIXUnderground Storage Tanks · 250 ft
- J.C. MOORE INDUSTRIES, INCBrownfields · 400 ft
- ALLTEL PAUnderground Storage Tanks · 450 ft
- ANCHOR FREDONIA PLTToxics Release Inventory · 550 ft
- ANCHOR AN OLDCASTLE COToxics Release Inventory · 600 ft
- JOHNSTONS AUTO SVCUnderground Storage Tanks · 1.4 mi
- LAUBSCHER CHEESEUnderground Storage Tanks · 1.4 mi
- MR 202Nitrate · 1.5 mi
- MR 2343Nitrate · 1.5 mi
- JCM MOORE INDUSTRIESBrownfields · 1.5 mi
- JOHN KOLLER & SONUnderground Storage Tanks · 1.6 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Fredonia'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 Fredonia.
Total Sites
337
within ~10 miles of Fredonia
Risk Level
Elevated
Highest-severity
24 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of Fredonia
Severity Distribution
within ~10 miles of Fredonia
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Fredonia, Toxics Release Inventory runs higher than the national average — 24 sites within ~10 miles of Fredonia. 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 Fredonia
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 Fredonia average
Your land is one point inside Fredonia
Everything above resolves to Fredonia as a whole — one PHZM band and one 28°F frost record, read across 228 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 town 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 Fredonia Average
Fredonia Average
- ●USDA Zones 6a, averaged across Fredonia
- ●One soil character for all of Fredonia
- ●Frost dates read at Fredonia's scale: Apr 20 to Nov 3
YOUR Parcel
- ✓Your exact zone, not Fredonia's 6a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Fredonia
Pull a site-specific report for your exact address in Fredonia, Pennsylvania — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Fredonia averages can't show:
We read public map data around Fredonia — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Fredonia average
How we know this about Fredonia
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at this town’s own centroid; hard-freeze dates from NOAA 1991–2020 28°F normals at Fredonia’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 town grain anywhere on this page — there is no town-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 Fredonia
When does frost risk typically end in Fredonia?
The last hard freeze (28°F) in Fredonia typically lands around Apr 20, 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 11.
When is the first frost in Fredonia?
The first hard freeze (28°F) in Fredonia typically arrives around Nov 3, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 20, so the watching starts about Oct 4 — about 197 days after the spring freeze cleared.
How long is the growing season in Fredonia?
Measured between 28°F hard freezes, Fredonia sees about 197 frost-free days — roughly Apr 20 through Nov 3, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 11 to Oct 20, about 162 days.
Is the soil safe to grow vegetables in Fredonia?
The federal record around Fredonia is a meaningful one — 337 documented sites, mostly Underground Storage Tanks entries (165), 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 Fredonia?
From about Oct 4 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 3 (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 3. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Fredonia's scale — its 6a band and its 197-day season. Your yard writes its own version of Fredonia'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 Fredonia’s own scale
7 of the readings below were taken at Fredonia's own scale — its own ~197-day season between 28°F freezes, the 228 acres it covers and 337 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Fredonia's own USDA hardiness band, zones 6aUSDA PHZM 2023
- Fredonia's own 28°F hard-freeze dates, about Apr 20 and Nov 3 and the ~197-day span between themNOAA 1991–2020 Climate Normals
- 337 documented contamination sites on the federal record near Fredonia, the closest Underground Storage Tanks record under a tenth of a mile out from the town centreFederal environmental registers
- Fredonia's boundary and the 228 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6a and a ~197-day seasonGrowable Ground crop-matching engine
- The ecoregion at Fredonia's own centroid, the Erie Drift PlainUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Fredonialydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Fredonia's 228 acres read through its county's SSURGO summaryfrom Mercer County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Mercer 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 Mercer County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Fredonia's 228 acreswhy one lot differs from the next →
- Which side of Fredonia you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 228 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 Fredonia-wide figureread your own land →
More in Pennsylvania
Wider growing context
What grows across PennsylvaniaFredonia sits outside our named growing regions, so Pennsylvania as a whole is its closest context here.
Nearby growing guides