Bath, Pennsylvania, sits in USDA hardiness zone 7a — a zone band wide enough that plant choice, not possibility, is the interesting question.
The conditions favor cabbage, pawpaw, california poppy, and collard greens, among others — though every individual site edits that list with its own soil, sun, and drainage.
Even in Bath, 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 Bath 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 Bath — soil, climate, flood, and parcel records. How we handle your address.
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Bath — the short answer
Bath, Pennsylvania: USDA zone 7a, about 206 days between hard freezes, across 578 acres of town.
- USDA zone
- 7a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 7
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 30
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~206
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 578 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 7a is Bath's average, not your lot's — a low corner or a tree line moves it. Against Bath's 206-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Bath
Each reading below is measured for Bath itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredBath runs about 206 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
MeasuredBath sits in USDA hardiness zone 7a.
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 Bath is in
Bath sits in the Ridge and Valley — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Bath's own centroid rather than borrowed from Northampton County.
What Grows in Bath
Every plant below cleared Bath's own zone 7a and its 206-day season. Each card opens that plant's Pennsylvania profile. How we score.
Is it too late to plant in Bath?
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 10; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 7 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 30 — 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 Bath
Spotted lanternfly documented 1 miles from Bath, first recorded 2017. What to watch for.
What's on the federal record near Bath
Closest first, within ~10 miles of Bath. Listing isn't leaking, and distance isn't exposure.
- INSULDECK CORPUnderground Storage Tanks · 550 ft
- SACRED HEART PARISHUnderground Storage Tanks · 650 ft
- BATH AUTO CTRUnderground Storage Tanks · 700 ft
- BILLINGS SVC STAUnderground Storage Tanks · 750 ft
- EXXON RS 2 1670Underground Storage Tanks · 850 ft
- BATH HDWE STOREUnderground Storage Tanks · 1100 ft
- 7 ELEVEN 40206Underground Storage Tanks · 1500 ft
- SUNOCO SVC STABrownfields · 1500 ft
- BATH ESS BLDGUnderground Storage Tanks · 1800 ft
- BATH MEMUnderground Storage Tanks · 1900 ft
- GTS INCUnderground Storage Tanks · 2500 ft
- WERNER FUEL OILUnderground Storage Tanks · 2500 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Bath'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 Bath.
Sources Checked
within ~10 miles of Bath
Severity Distribution
within ~10 miles of Bath
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Bath, Toxics Release Inventory runs higher than the national average — 108 sites within ~10 miles of Bath. Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
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 Bath
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 Bath average
Your land is one point inside Bath
Everything above resolves to Bath as a whole — one PHZM band and one 28°F frost record, read across 578 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 Bath Average
Bath Average
- ●USDA Zones 7a, averaged across Bath
- ●One soil character for all of Bath
- ●Frost dates read at Bath's scale: Apr 7 to Oct 30
YOUR Parcel
- ✓Your exact zone, not Bath's 7a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Bath
Pull a site-specific report for your exact address in Bath, Pennsylvania — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Bath averages can't show:
We read public map data around Bath — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Bath average
How we know this about Bath
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 Bath’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 Bath
When does frost risk typically end in Bath?
The last hard freeze (28°F) in Bath typically lands around Apr 7, 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 28.
When is the first frost in Bath?
The first hard freeze (28°F) in Bath typically arrives around Oct 30, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 16, so the watching starts about Sep 30 — about 206 days after the spring freeze cleared.
How long is the growing season in Bath?
Measured between 28°F hard freezes, Bath sees about 206 frost-free days — roughly Apr 7 through Oct 30, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 28 to Oct 16, about 171 days.
Is the soil safe to grow vegetables in Bath?
The federal record around Bath runs heavier than most — 1,689 documented sites, mostly Underground Storage Tanks entries (961), the nearest Underground Storage Tanks record about 0.1 miles out — so test the soil before planting food in the ground, and raised beds with clean imported soil grow well in the meantime. Even here, proximity to a documented site is information, not a diagnosis of any one yard; the contamination map shows exactly what's recorded and where.
How do I protect my plants from frost in Bath?
From about Sep 30 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 30 (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 30. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Bath's scale — its 7a band and its 206-day season. Your yard writes its own version of Bath'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 Bath’s own scale
7 of the readings below were taken at Bath's own scale — its own ~206-day season between 28°F freezes, the 578 acres it covers and 1,689 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Bath's own USDA hardiness band, zones 7aUSDA PHZM 2023
- Bath's own 28°F hard-freeze dates, about Apr 7 and Oct 30 and the ~206-day span between themNOAA 1991–2020 Climate Normals
- 1,689 documented contamination sites on the federal record near Bath, the closest Underground Storage Tanks record about 0.1 miles out from the town centreFederal environmental registers
- Bath's boundary and the 578 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7a and a ~206-day seasonGrowable Ground crop-matching engine
- The ecoregion at Bath's own centroid, the Ridge and ValleyUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Bathlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Bath's 578 acres read through its county's SSURGO summaryfrom Northampton County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Northampton 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 Northampton County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Bath's 578 acreswhy one lot differs from the next →
- Which side of Bath you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 578 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks 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 Bath-wide figureread your own land →