Rosenhayn, New Jersey, sits in USDA hardiness zone 7b — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
The conditions favor cabbage, prickly pear, california poppy, and collard greens, among others — though every individual site edits that list with its own soil, sun, and drainage.
Even in Rosenhayn, 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 Rosenhayn 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 Rosenhayn — soil, climate, flood, and parcel records. How we handle your address.
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Rosenhayn — the short answer
Rosenhayn, New Jersey: USDA zone 7b, about 220 days between hard freezes, across 2K acres of town.
- USDA zone
- 7b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 1
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 7
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~220
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 2K 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 Rosenhayn's average, not your lot's — a low corner or a tree line moves it. Against Rosenhayn's 220-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Rosenhayn
Each reading below is measured for Rosenhayn itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredRosenhayn runs about 220 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
MeasuredRosenhayn 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 Rosenhayn is in
Rosenhayn sits in the Atlantic Coastal Pine Barrens — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Rosenhayn's own centroid rather than borrowed from Cumberland County.
What Grows in Rosenhayn
Every plant below cleared Rosenhayn's own zone 7b and its 220-day season. Each card opens that plant's New Jersey profile. How we score.
Is it too late to plant in Rosenhayn?
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 4; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 1 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 7 — 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 Rosenhayn
Spotted lanternfly documented 2 miles from Rosenhayn, first recorded 2019. What to watch for.
What's on the federal record near Rosenhayn
Closest first, within ~10 miles of Rosenhayn. Listing isn't leaking, and distance isn't exposure.
- 110991-- DomNitrate · 650 ft
- S & L REALTY ASSOCIATES LLCUnderground Storage Tanks · 950 ft
- MAJOR PETROLEUM INDUSTRIESUnderground Storage Tanks · 1000 ft
- SIX POINT PRODUCE INCUnderground Storage Tanks · 1200 ft
- 110921-- Irr 1Nitrate · 1700 ft
- 110915-- DomNitrate · 2000 ft
- 59455 BRIDGETON FUELSUnderground Storage Tanks · 2000 ft
- JOE SPERANZAUnderground Storage Tanks · 2400 ft
- 569 MORTON AVENUEUnderground Storage Tanks · 0.5 mi
- MST DEVELOPMENTUnderground Storage Tanks · 0.5 mi
- D&P USED AUTO PARTSUnderground Storage Tanks · 0.6 mi
- 110918-- DomNitrate · 0.6 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Rosenhayn'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 Rosenhayn.
Sources Checked
within ~10 miles of Rosenhayn
Severity Distribution
within ~10 miles of Rosenhayn
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Rosenhayn, two things run higher than the national average within ~10 miles of Rosenhayn — Superfund (32 sites) and Nitrate (374 sites). It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
Superfund: Superfund sites represent the most severe contamination in the federal system.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Commission professional soil testing before any food production (test for heavy metals, VOCs, and SVOCs).
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in Rosenhayn
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 Rosenhayn average
Your land is one point inside Rosenhayn
Everything above resolves to Rosenhayn as a whole — one PHZM band and one 28°F frost record, read across 2K 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 Rosenhayn Average
Rosenhayn Average
- ●USDA Zones 7b, averaged across Rosenhayn
- ●One soil character for all of Rosenhayn
- ●Frost dates read at Rosenhayn's scale: Apr 1 to Nov 7
YOUR Parcel
- ✓Your exact zone, not Rosenhayn's 7b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Rosenhayn
Pull a site-specific report for your exact address in Rosenhayn, New Jersey — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Rosenhayn averages can't show:
We read public map data around Rosenhayn — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Rosenhayn average
How we know this about Rosenhayn
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 Rosenhayn’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 Rosenhayn
When does frost risk typically end in Rosenhayn?
The last hard freeze (28°F) in Rosenhayn typically lands around Apr 1, 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 22.
When is the first frost in Rosenhayn?
The first hard freeze (28°F) in Rosenhayn typically arrives around Nov 7, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 24, so the watching starts about Oct 8 — about 220 days after the spring freeze cleared.
How long is the growing season in Rosenhayn?
Measured between 28°F hard freezes, Rosenhayn sees about 220 frost-free days — roughly Apr 1 through Nov 7, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 22 to Oct 24, about 185 days.
Is the soil safe to grow vegetables in Rosenhayn?
The federal record around Rosenhayn runs heavier than most — 1,217 documented sites, mostly Underground Storage Tanks entries (646), the nearest Nitrate 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 Rosenhayn?
From about Oct 8 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 7 (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 7. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Rosenhayn's scale — its 7b band and its 220-day season. Your yard writes its own version of Rosenhayn'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 Rosenhayn’s own scale
7 of the readings below were taken at Rosenhayn's own scale — its own ~220-day season between 28°F freezes, the 1,694 acres it covers and 1,217 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Rosenhayn's own USDA hardiness band, zones 7bUSDA PHZM 2023
- Rosenhayn's own 28°F hard-freeze dates, about Apr 1 and Nov 7 and the ~220-day span between themNOAA 1991–2020 Climate Normals
- 1,217 documented contamination sites on the federal record near Rosenhayn, the closest Nitrate record about 0.1 miles out from the town centreFederal environmental registers
- Rosenhayn's boundary and the 1,694 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7b and a ~220-day seasonGrowable Ground crop-matching engine
- The ecoregion at Rosenhayn's own centroid, the Atlantic Coastal Pine BarrensUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Rosenhaynlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Rosenhayn's 1,694 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 Rosenhayn's 1,694 acreswhy one lot differs from the next →
- Which side of Rosenhayn you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,694 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Nitrate 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 Rosenhayn-wide figureread your own land →