Olean, New York, sits in USDA hardiness zone 5b — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
The conditions favor cabbage, cranberry, lavender, and collard greens, among others — though every individual site edits that list with its own soil, sun, and drainage.
Even in Olean, 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 Olean 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 Olean — soil, climate, flood, and parcel records. How we handle your address.
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Olean — the short answer
Olean, New York: USDA zone 5b, about 165 days between hard freezes, across 4K acres of city.
- USDA zone
- 5b
- USDA PHZM 2023
- Last hard freeze (28°F)
- May 4
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 16
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~165
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 4K 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 5b is Olean's average, not your lot's — a low corner or a tree line moves it. Against Olean's 165-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Olean
Each reading below is measured for Olean itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredOlean runs about 165 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
MeasuredOlean sits in USDA hardiness zone 5b.
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 Olean is in
Olean sits in the North Central Appalachians — EPA Level III, inside the wider Northern Forests. That is read at Olean's own centroid rather than borrowed from Cattaraugus County.
What Grows in Olean
Every plant below cleared Olean's own zone 5b and its 165-day season. Each card opens that plant's New York profile. How we score.
Is it too late to plant in Olean?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Apr 6; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near May 4 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 16 — long-season crops need about 90 days of runway, quick greens only 30. The tail of the season still works: sixty-day crops into late summer, quick greens after, garlic last of all.
Documented around Olean
Spotted lanternfly documented 7 miles from Olean, first recorded 2021. What to watch for.
What's on the federal record near Olean
Closest first, within ~10 miles of Olean. Listing isn't leaking, and distance isn't exposure.
- ST. JOSEPH'S CHURCHUnderground Storage Tanks · 300 ft
- OSM CORP FACILITYBrownfields · 750 ft
- OLEAN CITY SCHOOL DISTRICTBrownfields · 900 ft
- P-14 OLEANUnderground Storage Tanks · 1000 ft
- FAMILY DOLLAR STORE 2125Brownfields · 1400 ft
- CVS PHARMACY #0539Brownfields · 1400 ft
- PENNEY OPCO LLC 2916Brownfields · 1400 ft
- BIG LOTS #1851Brownfields · 1500 ft
- DOLLAR GENERAL STORE #8104Brownfields · 1500 ft
- MIDAS MUFFLERUnderground Storage Tanks · 1500 ft
- NYSDOT BIN 1092121 & 1092122Brownfields · 1500 ft
- MAZZA SHEET METALUnderground Storage Tanks · 1600 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Olean'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 Olean.
Sources Checked
within ~10 miles of Olean
Severity Distribution
within ~10 miles of Olean
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Olean, Superfund runs higher than the national average — 4 sites within ~10 miles of Olean. That's not a problem with your land — it's information about it.
Superfund: Superfund sites represent the most severe contamination in the federal system.
Commission professional soil testing before any food production (test for heavy metals, VOCs, and SVOCs).
Check your specific parcel in Olean
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 Olean average
Your land is one point inside Olean
Everything above resolves to Olean as a whole — one PHZM band and one 28°F frost record, read across 4K 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 Olean Average
Olean Average
- ●USDA Zones 5b, averaged across Olean
- ●One soil character for all of Olean
- ●Frost dates read at Olean's scale: May 4 to Oct 16
YOUR Parcel
- ✓Your exact zone, not Olean's 5b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Olean
Pull a site-specific report for your exact address in Olean, New York — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Olean averages can't show:
We read public map data around Olean — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Olean average
How we know this about Olean
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 Olean’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 Olean
When does frost risk typically end in Olean?
The last hard freeze (28°F) in Olean typically lands around May 4, 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 25.
When is the first frost in Olean?
The first hard freeze (28°F) in Olean typically arrives around Oct 16, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 2, so the watching starts about Sep 16 — about 165 days after the spring freeze cleared.
How long is the growing season in Olean?
Measured between 28°F hard freezes, Olean sees about 165 frost-free days — roughly May 4 through Oct 16, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 25 to Oct 2, about 130 days.
Is the soil safe to grow vegetables in Olean?
The federal record around Olean is a meaningful one — 261 documented sites, mostly Underground Storage Tanks entries (121), 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 Olean?
From about Sep 16 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 16 (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 16. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Olean's scale — its 5b band and its 165-day season. Your yard writes its own version of Olean'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 Olean’s own scale
7 of the readings below were taken at Olean's own scale — its own ~165-day season between 28°F freezes, the 3,776 acres it covers and 261 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Olean's own USDA hardiness band, zones 5bUSDA PHZM 2023
- Olean's own 28°F hard-freeze dates, about May 4 and Oct 16 and the ~165-day span between themNOAA 1991–2020 Climate Normals
- 261 documented contamination sites on the federal record near Olean, the closest Underground Storage Tanks record under a tenth of a mile out from the town centreFederal environmental registers
- Olean's boundary and the 3,776 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 5b and a ~165-day seasonGrowable Ground crop-matching engine
- The ecoregion at Olean's own centroid, the North Central AppalachiansUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Oleanlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Olean's 3,776 acres read through its county's SSURGO summaryfrom Cattaraugus County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Cattaraugus County
- The growing challenges every New York grower plans around — written at state scale, so they stay on the state guidefrom New York
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Cattaraugus County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Olean's 3,776 acreswhy one lot differs from the next →
- Which side of Olean you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 3,776 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 Olean-wide figureread your own land →
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