North Towanda, Pennsylvania, sits in USDA hardiness zone 6a — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
Among the crops suited to this profile: cabbage, blackberry, california poppy, and collard greens. The site-level story — soil, sun, drainage — decides the rest.
Even in North Towanda, 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 North Towanda 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 North Towanda — soil, climate, flood, and parcel records. How we handle your address.
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North Towanda — the short answer
North Towanda, Pennsylvania: USDA zone 6a, about 180 days between hard freezes, across 488 acres of town.
- USDA zone
- 6a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 26
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 23
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~180
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 488 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 North Towanda's average, not your lot's — a low corner or a tree line moves it. Against North Towanda's 180-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in North Towanda
Each reading below is measured for North Towanda itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredNorth Towanda runs about 180 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
MeasuredNorth Towanda 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 North Towanda is in
North Towanda sits in the Northern Allegheny Plateau — EPA Level III, inside the wider Eastern Temperate Forests. That is read at North Towanda's own centroid rather than borrowed from Bradford County.
What Grows in North Towanda
Every plant below cleared North Towanda's own zone 6a and its 180-day season. Each card opens that plant's Pennsylvania profile. How we score.
Is it too late to plant in North Towanda?
Rarely: the season closes in stages, not all at once, and each stage has its crops. Cool-season crops can go in from around Mar 29; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 26 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 23 — 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 North Towanda
Spotted lanternfly documented 1 miles from North Towanda, first recorded 2021. What to watch for.
What's on the federal record near North Towanda
Closest first, within ~10 miles of North Towanda. Listing isn't leaking, and distance isn't exposure.
- NORTH TOWANDA DELI & BAKERYUnderground Storage Tanks · 250 ft
- DANDY MINI MART 5Underground Storage Tanks · 400 ft
- BR 552Nitrate · 650 ft
- AGFA CORP TOWANDA PLTBrownfields · 1300 ft
- QNITY ELECTRONICS INC/TOWANDA PLTBrownfields · 1400 ft
- QNITY ELECTRONICS INC/TOWANDA PLTToxics Release Inventory · 1400 ft
- BR 747Nitrate · 1700 ft
- GLOBAL TUNGSTEN & POWDERSUnderground Storage Tanks · 2000 ft
- QNITY TOWANDABrownfields · 2100 ft
- CVS PHARMACY #2565Brownfields · 2200 ft
- PENELEC TOWAND OFCUnderground Storage Tanks · 2200 ft
- MEM HOSPUnderground Storage Tanks · 2300 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from North Towanda'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 North Towanda.
Total Sites
271
within ~10 miles of North Towanda
Risk Level
Elevated
Highest-severity
5 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of North Towanda
Severity Distribution
within ~10 miles of North Towanda
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around North Towanda, Nitrate runs higher than the national average — 152 sites within ~10 miles of North Towanda. 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.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in North Towanda
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 North Towanda average
Your land is one point inside North Towanda
Everything above resolves to North Towanda as a whole — one PHZM band and one 28°F frost record, read across 488 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 North Towanda Average
North Towanda Average
- ●USDA Zones 6a, averaged across North Towanda
- ●One soil character for all of North Towanda
- ●Frost dates read at North Towanda's scale: Apr 26 to Oct 23
YOUR Parcel
- ✓Your exact zone, not North Towanda's 6a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in North Towanda
Pull a site-specific report for your exact address in North Towanda, Pennsylvania — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that North Towanda averages can't show:
We read public map data around North Towanda — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the North Towanda average
How we know this about North Towanda
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 North Towanda’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 North Towanda
When does frost risk typically end in North Towanda?
The last hard freeze (28°F) in North Towanda typically lands around Apr 26, 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 17.
When is the first frost in North Towanda?
The first hard freeze (28°F) in North Towanda typically arrives around Oct 23, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 9, so the watching starts about Sep 23 — about 180 days after the spring freeze cleared.
How long is the growing season in North Towanda?
Measured between 28°F hard freezes, North Towanda sees about 180 frost-free days — roughly Apr 26 through Oct 23, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 17 to Oct 9, about 145 days.
Is the soil safe to grow vegetables in North Towanda?
The federal record around North Towanda is a meaningful one — 271 documented sites, mostly Nitrate entries (152), 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 North Towanda?
From about Sep 23 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 23 (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 23. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at North Towanda's scale — its 6a band and its 180-day season. Your yard writes its own version of North Towanda'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 North Towanda’s own scale
7 of the readings below were taken at North Towanda's own scale — its own ~180-day season between 28°F freezes, the 488 acres it covers and 271 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- North Towanda's own USDA hardiness band, zones 6aUSDA PHZM 2023
- North Towanda's own 28°F hard-freeze dates, about Apr 26 and Oct 23 and the ~180-day span between themNOAA 1991–2020 Climate Normals
- 271 documented contamination sites on the federal record near North Towanda, the closest Underground Storage Tanks record under a tenth of a mile out from the town centreFederal environmental registers
- North Towanda's boundary and the 488 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6a and a ~180-day seasonGrowable Ground crop-matching engine
- The ecoregion at North Towanda's own centroid, the Northern Allegheny PlateauUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of North Towandalydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so North Towanda's 488 acres read through its county's SSURGO summaryfrom Bradford County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Bradford 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 Bradford County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among North Towanda's 488 acreswhy one lot differs from the next →
- Which side of North Towanda you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 488 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 North Towanda-wide figureread your own land →
More in Pennsylvania
Wider growing context
What grows across PennsylvaniaNorth Towanda sits outside our named growing regions, so Pennsylvania as a whole is its closest context here.
Nearby growing guides