Harrington Park, New Jersey, sits in USDA hardiness zone 7a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
Crops well matched to these conditions include cabbage, hazelnut, california poppy, and collard greens — though what thrives on any one site still turns on its specific soil, sun, and drainage.
Even in Harrington Park, 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 Harrington Park 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 Harrington Park — soil, climate, flood, and parcel records. How we handle your address.
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Harrington Park — the short answer
Harrington Park, New Jersey: USDA zone 7a, about 239 days between hard freezes, across 1K acres of town.
- USDA zone
- 7a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 26
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 20
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~239
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 1K 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 Harrington Park's average, not your lot's — a low corner or a tree line moves it. Against Harrington Park's 239-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Harrington Park
Each reading below is measured for Harrington Park itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredHarrington Park runs about 239 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
MeasuredHarrington Park 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 Harrington Park is in
Harrington Park sits in the Northern Piedmont — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Harrington Park's own centroid rather than borrowed from Bergen County.
What Grows in Harrington Park
Every plant below cleared Harrington Park's own zone 7a and its 239-day season. Each card opens that plant's New Jersey profile. How we score.
Is it too late to plant in Harrington Park?
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 26; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 26 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 20 — long-season crops need about 90 days of runway, quick greens only 30. With a season this long, “too late” mostly means “switch crops” — second sowings and a full fall garden are the norm, with garlic closing the year.
Documented around Harrington Park
Spotted lanternfly documented 1 miles from Harrington Park, first recorded 2021. What to watch for.
What's on the federal record near Harrington Park
Closest first, within ~10 miles of Harrington Park. Listing isn't leaking, and distance isn't exposure.
- HARRINGTON AUTO SERVICEUnderground Storage Tanks · 0.6 mi
- RAF REAL ESTATE REFERRAL LLCUnderground Storage Tanks · 0.6 mi
- HARRINGTON PARK PUMP STATIONUnderground Storage Tanks · 0.7 mi
- D P W GARAGEUnderground Storage Tanks · 0.7 mi
- CEDARBROOOK AUTO REPAIR SERVICEUnderground Storage Tanks · 0.7 mi
- ROCKLAND ELECTRIC HARRINGTON PK OP CNTRUnderground Storage Tanks · 0.7 mi
- GLENN'S EXXON 2266Underground Storage Tanks · 0.8 mi
- SITE #36653Underground Storage Tanks · 0.8 mi
- CSX TRANSPORTATION INCBrownfields · 1.0 mi
- BEST HEALTH CARE CENTERBrownfields · 1.0 mi
- NORWOOD ELEMENTARY SCHOOLUnderground Storage Tanks · 1.0 mi
- NORWOOD BORO BD OF ED NORWOOD ELEMENTARY SCHOOLBrownfields · 1.0 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Harrington Park'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 Harrington Park.
Sources Checked
within ~10 miles of Harrington Park
Severity Distribution
within ~10 miles of Harrington Park
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Harrington Park, Superfund runs higher than the national average — 64 sites within ~10 miles of Harrington Park. 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 Harrington Park
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 Harrington Park average
Your land is one point inside Harrington Park
Everything above resolves to Harrington Park as a whole — one PHZM band and one 28°F frost record, read across 1K 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 Harrington Park Average
Harrington Park Average
- ●USDA Zones 7a, averaged across Harrington Park
- ●One soil character for all of Harrington Park
- ●Frost dates read at Harrington Park's scale: Mar 26 to Nov 20
YOUR Parcel
- ✓Your exact zone, not Harrington Park's 7a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Harrington Park
Pull a site-specific report for your exact address in Harrington Park, New Jersey — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Harrington Park averages can't show:
We read public map data around Harrington Park — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Harrington Park average
How we know this about Harrington Park
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 Harrington Park’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 Harrington Park
When does frost risk typically end in Harrington Park?
The last hard freeze (28°F) in Harrington Park typically lands around Mar 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 Apr 16.
When is the first frost in Harrington Park?
The first hard freeze (28°F) in Harrington Park typically arrives around Nov 20, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 6, so the watching starts about Oct 21 — about 239 days after the spring freeze cleared.
How long is the growing season in Harrington Park?
Measured between 28°F hard freezes, Harrington Park sees about 239 frost-free days — roughly Mar 26 through Nov 20, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 16 to Nov 6, about 204 days.
Is the soil safe to grow vegetables in Harrington Park?
The federal record around Harrington Park runs heavier than most — 4,172 documented sites, mostly Underground Storage Tanks entries (2,347), the nearest Underground Storage Tanks record about 0.6 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 Harrington Park?
From about Oct 21 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 20 (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 20. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Harrington Park's scale — its 7a band and its 239-day season. Your yard writes its own version of Harrington Park'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 Harrington Park’s own scale
7 of the readings below were taken at Harrington Park's own scale — its own ~239-day season between 28°F freezes, the 1,181 acres it covers and 4,172 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Harrington Park's own USDA hardiness band, zones 7aUSDA PHZM 2023
- Harrington Park's own 28°F hard-freeze dates, about Mar 26 and Nov 20 and the ~239-day span between themNOAA 1991–2020 Climate Normals
- 4,172 documented contamination sites on the federal record near Harrington Park, the closest Underground Storage Tanks record about 0.6 miles out from the town centreFederal environmental registers
- Harrington Park's boundary and the 1,181 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7a and a ~239-day seasonGrowable Ground crop-matching engine
- The ecoregion at Harrington Park's own centroid, the Northern PiedmontUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Harrington Parklydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Harrington Park's 1,181 acres read through its county's SSURGO summaryfrom Bergen County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Bergen 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 Bergen County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Harrington Park's 1,181 acreswhy one lot differs from the next →
- Which side of Harrington Park you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,181 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.6 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 Harrington Park-wide figureread your own land →