Dennisville, New Jersey, sits in USDA hardiness zone 7b — a zone band wide enough that plant choice, not possibility, is the interesting question.
Among the crops suited to this profile: cabbage, prickly pear, california poppy, and collard greens. The site-level story — soil, sun, drainage — decides the rest.
Even in Dennisville, 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 Dennisville 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 Dennisville — soil, climate, flood, and parcel records. How we handle your address.
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Dennisville — the short answer
Dennisville, New Jersey: USDA zone 7b, about 223 days between hard freezes, across 3K acres of town.
- USDA zone
- 7b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 3
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 12
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~223
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 3K 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 Dennisville's average, not your lot's — a low corner or a tree line moves it. Against Dennisville's 223-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Dennisville
Each reading below is measured for Dennisville itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredDennisville runs about 223 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
MeasuredDennisville 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 Dennisville is in
Dennisville sits in the Middle Atlantic Coastal Plain — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Dennisville's own centroid, and it is not what its county reads: Cape May County is mostly Atlantic Coastal Pine Barrens. The wider page above you is answering a different question about different ground.
What Grows in Dennisville
Every plant below cleared Dennisville's own zone 7b and its 223-day season. Each card opens that plant's New Jersey profile. How we score.
Is it too late to plant in Dennisville?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Mar 6; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 3 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 12 — long-season crops need about 90 days of runway, quick greens only 30. A long window like this one runs successions deep into fall — and even its last weeks take quick greens and garlic.
Documented around Dennisville
Spotted lanternfly documented 1 miles from Dennisville, first recorded 2020. What to watch for.
What's on the federal record near Dennisville
Closest first, within ~10 miles of Dennisville. Listing isn't leaking, and distance isn't exposure.
- DENNIS TWP BD OF EDUnderground Storage Tanks · 1300 ft
- 090375-- MW-1 Elem Sch 1989Nitrate · 0.5 mi
- DENNIS TWP ELEMENTARY SCHOOLUnderground Storage Tanks · 0.6 mi
- DENNIS TWPUnderground Storage Tanks · 0.8 mi
- RIO GRANDE BUILDING MATERIALSUnderground Storage Tanks · 1.1 mi
- OCEAN FOOD & FUEL LLCUnderground Storage Tanks · 1.2 mi
- 090374-- Dennisville 1985Nitrate · 1.2 mi
- GENTILINI FORD INCUnderground Storage Tanks · 1.7 mi
- FORMER CAFE 47Underground Storage Tanks · 1.7 mi
- 090240-- IrrNitrate · 1.8 mi
- 090345-- MW-10 Woodbine State SchNitrate · 1.9 mi
- WOODBINE RADIO TOWERUnderground Storage Tanks · 2.1 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Dennisville'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 Dennisville.
Sources Checked
within ~10 miles of Dennisville
Severity Distribution
within ~10 miles of Dennisville
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Dennisville, Nitrate runs higher than the national average — 144 sites within ~10 miles of Dennisville. It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around 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 Dennisville
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 Dennisville average
Your land is one point inside Dennisville
Everything above resolves to Dennisville as a whole — one PHZM band and one 28°F frost record, read across 3K 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 Dennisville Average
Dennisville Average
- ●USDA Zones 7b, averaged across Dennisville
- ●One soil character for all of Dennisville
- ●Frost dates read at Dennisville's scale: Apr 3 to Nov 12
YOUR Parcel
- ✓Your exact zone, not Dennisville's 7b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Dennisville
Pull a site-specific report for your exact address in Dennisville, New Jersey — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Dennisville averages can't show:
We read public map data around Dennisville — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Dennisville average
How we know this about Dennisville
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 Dennisville’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 Dennisville
When does frost risk typically end in Dennisville?
The last hard freeze (28°F) in Dennisville typically lands around Apr 3, 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 24.
When is the first frost in Dennisville?
The first hard freeze (28°F) in Dennisville typically arrives around Nov 12, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 29, so the watching starts about Oct 13 — about 223 days after the spring freeze cleared.
How long is the growing season in Dennisville?
Measured between 28°F hard freezes, Dennisville sees about 223 frost-free days — roughly Apr 3 through Nov 12, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 24 to Oct 29, about 188 days.
Is the soil safe to grow vegetables in Dennisville?
The federal record around Dennisville is a meaningful one — 405 documented sites, mostly Underground Storage Tanks entries (204), the nearest Underground Storage Tanks record about 0.2 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 Dennisville?
From about Oct 13 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 12 (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 12. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Dennisville's scale — its 7b band and its 223-day season. Your yard writes its own version of Dennisville'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 Dennisville’s own scale
7 of the readings below were taken at Dennisville's own scale — its own ~223-day season between 28°F freezes, the 2,814 acres it covers and 405 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Dennisville's own USDA hardiness band, zones 7bUSDA PHZM 2023
- Dennisville's own 28°F hard-freeze dates, about Apr 3 and Nov 12 and the ~223-day span between themNOAA 1991–2020 Climate Normals
- 405 documented contamination sites on the federal record near Dennisville, the closest Underground Storage Tanks record about 0.2 miles out from the town centreFederal environmental registers
- Dennisville's boundary and the 2,814 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7b and a ~223-day seasonGrowable Ground crop-matching engine
- Dennisville 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 Dennisvillelydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Dennisville's 2,814 acres read through its county's SSURGO summaryfrom Cape May County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Cape May 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 Cape May County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Dennisville's 2,814 acreswhy one lot differs from the next →
- Which side of Dennisville you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 2,814 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks 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 Dennisville-wide figureread your own land →