Sinnamahoning, Pennsylvania, sits in USDA hardiness zone 6a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
A short list that earns its place here — cabbage, blackberry, california poppy, and collard greens — with any one site's soil, sun, and drainage making the final cut.
Even in Sinnamahoning, 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 Sinnamahoning 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 Sinnamahoning — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Sinnamahoning — the short answer
Sinnamahoning, Pennsylvania: USDA zone 6a, about 175 days between hard freezes, across 394 acres of town.
- USDA zone
- 6a
- USDA PHZM 2023
- Last hard freeze (28°F)
- May 2
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 24
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~175
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 394 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 Sinnamahoning's average, not your lot's — a low corner or a tree line moves it. Against Sinnamahoning's 175-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Sinnamahoning
Each reading below is measured for Sinnamahoning itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredSinnamahoning runs about 175 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
MeasuredSinnamahoning 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 Sinnamahoning is in
Sinnamahoning sits in the North Central Appalachians — EPA Level III, inside the wider Northern Forests. That is read at Sinnamahoning's own centroid rather than borrowed from Cameron County.
What Grows in Sinnamahoning
Every plant below cleared Sinnamahoning's own zone 6a and its 175-day season. Each card opens that plant's Pennsylvania profile. How we score.
Is it too late to plant in Sinnamahoning?
For most of the year, no — what changes is which crops still fit the days remaining. Cool-season crops can go in from around Apr 4; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near May 2 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 24 — long-season crops need about 90 days of runway, quick greens only 30. As the window narrows, the plantings just get faster — fall brassicas, then greens, then garlic to finish.
Documented around Sinnamahoning
Spotted lanternfly documented 2 miles from Sinnamahoning, first recorded 2019. What to watch for.
What's on the federal record near Sinnamahoning
Closest first, within ~10 miles of Sinnamahoning. Listing isn't leaking, and distance isn't exposure.
- SINNEMAHONING GRAVEL COUnderground Storage Tanks · 1.1 mi
- CAREYS COUNTRY STOREUnderground Storage Tanks · 2.2 mi
- MORTONS MTN OUTPOSTUnderground Storage Tanks · 2.3 mi
- DRIFTWOOD STAUnderground Storage Tanks · 2.6 mi
- ALLTEL PA NORTHERN DISTUnderground Storage Tanks · 2.6 mi
- CROFTWOOD MILLSUnderground Storage Tanks · 5.4 mi
- CM 24Nitrate · 6.7 mi
- CM 15Nitrate · 6.7 mi
- TETCO SUSQUEHANNA WESTBrownfields · 6.8 mi
- CM 20Nitrate · 6.9 mi
- CM 23Nitrate · 6.9 mi
- CM 25Nitrate · 6.9 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Sinnamahoning'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 Sinnamahoning.
Total Sites
41
within ~10 miles of Sinnamahoning
Risk Level
Low
Highest-severity
3 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of Sinnamahoning
Severity Distribution
within ~10 miles of Sinnamahoning
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Sinnamahoning, two things run higher than the national average within ~10 miles of Sinnamahoning — Nitrate (24 sites) and Toxics Release Inventory (3 sites). It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Check your specific parcel in Sinnamahoning
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 Sinnamahoning average
Your land is one point inside Sinnamahoning
Everything above resolves to Sinnamahoning as a whole — one PHZM band and one 28°F frost record, read across 394 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 Sinnamahoning Average
Sinnamahoning Average
- ●USDA Zones 6a, averaged across Sinnamahoning
- ●One soil character for all of Sinnamahoning
- ●Frost dates read at Sinnamahoning's scale: May 2 to Oct 24
YOUR Parcel
- ✓Your exact zone, not Sinnamahoning's 6a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Sinnamahoning
Pull a site-specific report for your exact address in Sinnamahoning, Pennsylvania — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Sinnamahoning averages can't show:
We read public map data around Sinnamahoning — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Sinnamahoning average
How we know this about Sinnamahoning
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 Sinnamahoning’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 Sinnamahoning
When does frost risk typically end in Sinnamahoning?
The last hard freeze (28°F) in Sinnamahoning typically lands around May 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 May 23.
When is the first frost in Sinnamahoning?
The first hard freeze (28°F) in Sinnamahoning typically arrives around Oct 24, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 10, so the watching starts about Sep 24 — about 175 days after the spring freeze cleared.
How long is the growing season in Sinnamahoning?
Measured between 28°F hard freezes, Sinnamahoning sees about 175 frost-free days — roughly May 2 through Oct 24, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 23 to Oct 10, about 140 days.
Is the soil safe to grow vegetables in Sinnamahoning?
The federal record around Sinnamahoning is light — 41 documented sites across the 9 federal source types we checked, mostly Nitrate entries (24), the nearest Underground Storage Tanks record about 1.1 miles out — and proximity to a documented site is information, not a diagnosis of any one yard. Growing food here starts from a strong position; a soil test before new food beds settles any site-specific question.
How do I protect my plants from frost in Sinnamahoning?
From about Sep 24 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 24 (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 24. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Sinnamahoning's scale — its 6a band and its 175-day season. Your yard writes its own version of Sinnamahoning'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 Sinnamahoning’s own scale
7 of the readings below were taken at Sinnamahoning's own scale — its own ~175-day season between 28°F freezes, the 394 acres it covers and 41 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Sinnamahoning's own USDA hardiness band, zones 6aUSDA PHZM 2023
- Sinnamahoning's own 28°F hard-freeze dates, about May 2 and Oct 24 and the ~175-day span between themNOAA 1991–2020 Climate Normals
- 41 documented contamination sites on the federal record near Sinnamahoning, the closest Underground Storage Tanks record about 1.1 miles out from the town centreFederal environmental registers
- Sinnamahoning's boundary and the 394 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6a and a ~175-day seasonGrowable Ground crop-matching engine
- The ecoregion at Sinnamahoning's own centroid, the North Central AppalachiansUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Sinnamahoninglydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Sinnamahoning's 394 acres read through its county's SSURGO summaryfrom Cameron County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Cameron 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 Cameron County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Sinnamahoning's 394 acreswhy one lot differs from the next →
- Which side of Sinnamahoning you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 394 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 1.1 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 Sinnamahoning-wide figureread your own land →