Aspinwall, Pennsylvania, sits in USDA hardiness zone 6b — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
Among the crops suited to this profile: cabbage, hazelnut, lavender, and collard greens. The site-level story — soil, sun, drainage — decides the rest.
Even in Aspinwall, 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 Aspinwall 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 Aspinwall — soil, climate, flood, and parcel records. How we handle your address.
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Aspinwall — the short answer
Aspinwall, Pennsylvania: USDA zone 6b, about 224 days between hard freezes, across 225 acres of town.
- USDA zone
- 6b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 2
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 12
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~224
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 225 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 Aspinwall's average, not your lot's — a low corner or a tree line moves it. Against Aspinwall's 224-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Aspinwall
Each reading below is measured for Aspinwall itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredAspinwall runs about 224 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
MeasuredAspinwall 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 Aspinwall is in
Aspinwall sits in the Western Allegheny Plateau — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Aspinwall's own centroid rather than borrowed from Allegheny County.
What Grows in Aspinwall
Every plant below cleared Aspinwall's own zone 6b and its 224-day season. Each card opens that plant's Pennsylvania profile. How we score.
Is it too late to plant in Aspinwall?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Mar 5; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 2 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 12 — 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 Aspinwall
Spotted lanternfly documented 3 miles from Aspinwall, first recorded 2014. What to watch for.
What's on the federal record near Aspinwall
Closest first, within ~10 miles of Aspinwall. Listing isn't leaking, and distance isn't exposure.
- SUNOCO TURNPIKE PLAZABrownfields · 650 ft
- CUMBERLAND GULF 143586 LUnderground Storage Tanks · 1200 ft
- ASPINWALL SUNOCOUnderground Storage Tanks · 1200 ft
- GENE FINKS PENNZOILUnderground Storage Tanks · 1500 ft
- SHERWIN WILLIAMS NO 1449Brownfields · 1700 ft
- NATIONAL TORCH TIP, INC.Toxics Release Inventory · 1700 ft
- EQUITABLE GAS DIV CUnderground Storage Tanks · 1800 ft
- ASPINWALL MARINAUnderground Storage Tanks · 1800 ft
- PITTSBURGH WATER TREATMENT PLANTBrownfields · 1900 ft
- PHOENIXX INTERNATIONAL, L.PToxics Release Inventory · 2300 ft
- ST MARGARET MEM HOSPUnderground Storage Tanks · 2400 ft
- UPMC ST MARGARET HOSP/PGHBrownfields · 2400 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Aspinwall'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 Aspinwall.
Total Sites
3,025
within ~10 miles of Aspinwall
Risk Level
Elevated
Highest-severity
14 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Aspinwall
Severity Distribution
within ~10 miles of Aspinwall
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 Aspinwall
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 Aspinwall average
Your land is one point inside Aspinwall
Everything above resolves to Aspinwall as a whole — one PHZM band and one 28°F frost record, read across 225 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 Aspinwall Average
Aspinwall Average
- ●USDA Zones 6b, averaged across Aspinwall
- ●One soil character for all of Aspinwall
- ●Frost dates read at Aspinwall's scale: Apr 2 to Nov 12
YOUR Parcel
- ✓Your exact zone, not Aspinwall's 6b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Aspinwall
Pull a site-specific report for your exact address in Aspinwall, Pennsylvania — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Aspinwall averages can't show:
We read public map data around Aspinwall — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Aspinwall average
How we know this about Aspinwall
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 Aspinwall’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 Aspinwall
When does frost risk typically end in Aspinwall?
The last hard freeze (28°F) in Aspinwall typically lands around Apr 2, 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 23.
When is the first frost in Aspinwall?
The first hard freeze (28°F) in Aspinwall typically arrives around Nov 12, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 29, so the watching starts about Oct 13 — about 224 days after the spring freeze cleared.
How long is the growing season in Aspinwall?
Measured between 28°F hard freezes, Aspinwall sees about 224 frost-free days — roughly Apr 2 through Nov 12, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 23 to Oct 29, about 189 days.
Is the soil safe to grow vegetables in Aspinwall?
The federal record around Aspinwall is a meaningful one — 3,025 documented sites, mostly Underground Storage Tanks entries (1,432), the nearest Brownfields record about 0.1 miles 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 Aspinwall?
From about Oct 13 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 12 (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 12. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Aspinwall's scale — its 6b band and its 224-day season. Your yard writes its own version of Aspinwall'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 Aspinwall’s own scale
7 of the readings below were taken at Aspinwall's own scale — its own ~224-day season between 28°F freezes, the 225 acres it covers and 3,025 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Aspinwall's own USDA hardiness band, zones 6bUSDA PHZM 2023
- Aspinwall's own 28°F hard-freeze dates, about Apr 2 and Nov 12 and the ~224-day span between themNOAA 1991–2020 Climate Normals
- 3,025 documented contamination sites on the federal record near Aspinwall, the closest Brownfields record about 0.1 miles out from the town centreFederal environmental registers
- Aspinwall's boundary and the 225 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6b and a ~224-day seasonGrowable Ground crop-matching engine
- The ecoregion at Aspinwall's own centroid, the Western Allegheny PlateauUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Aspinwalllydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Aspinwall's 225 acres read through its county's SSURGO summaryfrom Allegheny County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Allegheny 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 Allegheny County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Aspinwall's 225 acreswhy one lot differs from the next →
- Which side of Aspinwall you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 225 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields record about 0.1 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 Aspinwall-wide figureread your own land →