Greenwich, New Jersey, sits in USDA hardiness zone 7b — a zone band wide enough that plant choice, not possibility, is the interesting question.
Reliable performers under these conditions include cabbage, prickly pear, california poppy, and collard greens; what your own ground favors still comes down to its soil, sun, and drainage.
Even in Greenwich, 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 Greenwich 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 Greenwich — soil, climate, flood, and parcel records. How we handle your address.
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Greenwich — the short answer
Greenwich, New Jersey: USDA zone 7b, about 243 days between hard freezes, across 537 acres of town.
- USDA zone
- 7b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 21
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 19
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~243
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 537 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 7b is Greenwich's average, not your lot's — a low corner or a tree line moves it. Against Greenwich's 243-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Greenwich
Each reading below is measured for Greenwich itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredGreenwich runs about 243 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
MeasuredGreenwich sits in USDA hardiness zone 7b.
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 Greenwich is in
Greenwich sits in the Middle Atlantic Coastal Plain — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Greenwich's own centroid, and it is not what its county reads: Cumberland County is mostly Atlantic Coastal Pine Barrens. The wider page above you is answering a different question about different ground.
What Grows in Greenwich
Every plant below cleared Greenwich's own zone 7b and its 243-day season. Each card opens that plant's New Jersey profile. How we score.
Is it too late to plant in Greenwich?
Rarely: the season closes in stages, not all at once, and each stage has its crops. Cool-season crops can go in from around Feb 21; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 21 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 19 — long-season crops need about 90 days of runway, quick greens only 30. Here the season winds down slowly: late sowings, a real autumn harvest, and garlic in the ground before the first hard freeze.
Documented around Greenwich
Spotted lanternfly documented 3 miles from Greenwich, first recorded 2021. What to watch for.
What's on the federal record near Greenwich
Closest first, within ~10 miles of Greenwich. Listing isn't leaking, and distance isn't exposure.
- HANCOCKS HARBOR MARINAUnderground Storage Tanks · 1800 ft
- WOODS COUNTRY STOREUnderground Storage Tanks · 1800 ft
- 111918-- CKKC-4Nitrate · 1.5 mi
- 111920-- CKKC-6Nitrate · 1.5 mi
- 111919-- CKKC-5Nitrate · 1.5 mi
- 110063-- Back Neck Rd 1Nitrate · 1.8 mi
- ARNOLDS STOREUnderground Storage Tanks · 1.9 mi
- MORRIS GOODWIN SCHOOLUnderground Storage Tanks · 1.9 mi
- 110066-- Holton FarmsNitrate · 2.7 mi
- 110073-- Sheppards 2 ObsNitrate · 2.7 mi
- BELL ATLANTIC MOBILE SYSTEMSUnderground Storage Tanks · 2.8 mi
- TOWNSHIP WATER STORAGE TANKUnderground Storage Tanks · 2.9 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Greenwich'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 Greenwich.
Total Sites
319
within ~10 miles of Greenwich
Risk Level
Elevated
Highest-severity
2 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Greenwich
Severity Distribution
within ~10 miles of Greenwich
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Greenwich, Nitrate runs higher than the national average — 110 sites within ~10 miles of Greenwich. That's not a problem with your land — it's information about 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 Greenwich
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 Greenwich average
Your land is one point inside Greenwich
Everything above resolves to Greenwich as a whole — one PHZM band and one 28°F frost record, read across 537 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 Greenwich Average
Greenwich Average
- ●USDA Zones 7b, averaged across Greenwich
- ●One soil character for all of Greenwich
- ●Frost dates read at Greenwich's scale: Mar 21 to Nov 19
YOUR Parcel
- ✓Your exact zone, not Greenwich's 7b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Greenwich
Pull a site-specific report for your exact address in Greenwich, New Jersey — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Greenwich averages can't show:
We read public map data around Greenwich — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Greenwich average
How we know this about Greenwich
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 Greenwich’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 Greenwich
When does frost risk typically end in Greenwich?
The last hard freeze (28°F) in Greenwich typically lands around Mar 21, 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 11.
When is the first frost in Greenwich?
The first hard freeze (28°F) in Greenwich typically arrives around Nov 19, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 5, so the watching starts about Oct 20 — about 243 days after the spring freeze cleared.
How long is the growing season in Greenwich?
Measured between 28°F hard freezes, Greenwich sees about 243 frost-free days — roughly Mar 21 through Nov 19, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 11 to Nov 5, about 208 days.
Is the soil safe to grow vegetables in Greenwich?
The federal record around Greenwich is a meaningful one — 319 documented sites, mostly Underground Storage Tanks entries (176), the nearest Underground Storage Tanks record about 0.3 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 Greenwich?
From about Oct 20 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 19 (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 19. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Greenwich's scale — its 7b band and its 243-day season. Your yard writes its own version of Greenwich'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 Greenwich’s own scale
7 of the readings below were taken at Greenwich's own scale — its own ~243-day season between 28°F freezes, the 537 acres it covers and 319 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Greenwich's own USDA hardiness band, zones 7bUSDA PHZM 2023
- Greenwich's own 28°F hard-freeze dates, about Mar 21 and Nov 19 and the ~243-day span between themNOAA 1991–2020 Climate Normals
- 319 documented contamination sites on the federal record near Greenwich, the closest Underground Storage Tanks record about 0.3 miles out from the town centreFederal environmental registers
- Greenwich's boundary and the 537 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7b and a ~243-day seasonGrowable Ground crop-matching engine
- Greenwich 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 Greenwichlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Greenwich's 537 acres read through its county's SSURGO summaryfrom Cumberland County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Cumberland 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 Cumberland County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Greenwich's 537 acreswhy one lot differs from the next →
- Which side of Greenwich you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 537 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.3 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 Greenwich-wide figureread your own land →