Fieldsboro, New Jersey, sits in USDA hardiness zone 7a — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
The conditions favor cabbage, hazelnut, california poppy, and collard greens, among others — though every individual site edits that list with its own soil, sun, and drainage.
Even in Fieldsboro, 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 Fieldsboro 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 Fieldsboro — soil, climate, flood, and parcel records. How we handle your address.
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Fieldsboro — the short answer
Fieldsboro, New Jersey: USDA zone 7a, about 233 days between hard freezes, across 179 acres of town.
- USDA zone
- 7a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 28
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 16
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~233
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 179 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 Fieldsboro's average, not your lot's — a low corner or a tree line moves it. Against Fieldsboro's 233-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Fieldsboro
Each reading below is measured for Fieldsboro itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredFieldsboro runs about 233 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
MeasuredFieldsboro 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 Fieldsboro is in
Fieldsboro sits in the Middle Atlantic Coastal Plain — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Fieldsboro's own centroid, and it is not what its county reads: Burlington County is mostly Atlantic Coastal Pine Barrens. The wider page above you is answering a different question about different ground.
What Grows in Fieldsboro
Every plant below cleared Fieldsboro's own zone 7a and its 233-day season. Each card opens that plant's New Jersey profile. How we score.
Is it too late to plant in Fieldsboro?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Feb 28; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 28 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 16 — 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 Fieldsboro
Spotted lanternfly documented 3 miles from Fieldsboro, first recorded 2019. What to watch for.
What's on the federal record near Fieldsboro
Closest first, within ~10 miles of Fieldsboro. Listing isn't leaking, and distance isn't exposure.
- STEPAN COMPANY - FIELDSBORO PLANTBrownfields · 850 ft
- STEPAN COMPANY - FIELDSBORO PLANTToxics Release Inventory · 850 ft
- STEPAN COUnderground Storage Tanks · 900 ft
- PETER LUMBER COUnderground Storage Tanks · 1200 ft
- CONSOLIDATED STEEL & ALUMINUM FENCE COUnderground Storage Tanks · 2200 ft
- CHURCH BRICK COUnderground Storage Tanks · 2400 ft
- BK 641Nitrate · 0.5 mi
- ACME #3961Brownfields · 0.6 mi
- NEW JERSEY STATE POLICE BARRACKSUnderground Storage Tanks · 0.6 mi
- PSE & G COUnderground Storage Tanks · 0.6 mi
- BK 642Nitrate · 0.7 mi
- BORDENTOWN REGIONAL HIGH SCHOOLUnderground Storage Tanks · 0.7 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Fieldsboro'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 Fieldsboro.
Sources Checked
within ~10 miles of Fieldsboro
Severity Distribution
within ~10 miles of Fieldsboro
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Fieldsboro, Superfund runs higher than the national average — 34 sites within ~10 miles of Fieldsboro. 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 Fieldsboro
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 Fieldsboro average
Your land is one point inside Fieldsboro
Everything above resolves to Fieldsboro as a whole — one PHZM band and one 28°F frost record, read across 179 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 Fieldsboro Average
Fieldsboro Average
- ●USDA Zones 7a, averaged across Fieldsboro
- ●One soil character for all of Fieldsboro
- ●Frost dates read at Fieldsboro's scale: Mar 28 to Nov 16
YOUR Parcel
- ✓Your exact zone, not Fieldsboro's 7a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Fieldsboro
Pull a site-specific report for your exact address in Fieldsboro, New Jersey — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Fieldsboro averages can't show:
We read public map data around Fieldsboro — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Fieldsboro average
How we know this about Fieldsboro
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 Fieldsboro’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 Fieldsboro
When does frost risk typically end in Fieldsboro?
The last hard freeze (28°F) in Fieldsboro typically lands around Mar 28, 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 18.
When is the first frost in Fieldsboro?
The first hard freeze (28°F) in Fieldsboro typically arrives around Nov 16, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 2, so the watching starts about Oct 17 — about 233 days after the spring freeze cleared.
How long is the growing season in Fieldsboro?
Measured between 28°F hard freezes, Fieldsboro sees about 233 frost-free days — roughly Mar 28 through Nov 16, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 18 to Nov 2, about 198 days.
Is the soil safe to grow vegetables in Fieldsboro?
The federal record around Fieldsboro runs heavier than most — 2,481 documented sites, mostly Underground Storage Tanks entries (1,360), the nearest Brownfields record about 0.2 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 Fieldsboro?
From about Oct 17 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 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 Nov 16. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Fieldsboro's scale — its 7a band and its 233-day season. Your yard writes its own version of Fieldsboro'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 Fieldsboro’s own scale
7 of the readings below were taken at Fieldsboro's own scale — its own ~233-day season between 28°F freezes, the 179 acres it covers and 2,481 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Fieldsboro's own USDA hardiness band, zones 7aUSDA PHZM 2023
- Fieldsboro's own 28°F hard-freeze dates, about Mar 28 and Nov 16 and the ~233-day span between themNOAA 1991–2020 Climate Normals
- 2,481 documented contamination sites on the federal record near Fieldsboro, the closest Brownfields record about 0.2 miles out from the town centreFederal environmental registers
- Fieldsboro's boundary and the 179 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7a and a ~233-day seasonGrowable Ground crop-matching engine
- Fieldsboro sits in the Middle Atlantic Coastal Plain — not the ecoregion its county mostly readsUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Fieldsborolydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Fieldsboro's 179 acres read through its county's SSURGO summaryfrom Burlington County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Burlington County
- The growing challenges every New Jersey grower plans around — written at state scale, so they stay on the state guidefrom New Jersey
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Burlington County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Fieldsboro's 179 acreswhy one lot differs from the next →
- Which side of Fieldsboro you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 179 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields record about 0.2 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 Fieldsboro-wide figureread your own land →
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