Lawrenceville, New Jersey, sits in USDA hardiness zone 7a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
On paper, cabbage, hazelnut, california poppy, and collard greens all suit these conditions — on the ground, soil, sun, and drainage make the final call.
Even in Lawrenceville, 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 Lawrenceville 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 Lawrenceville — soil, climate, flood, and parcel records. How we handle your address.
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Lawrenceville — the short answer
Lawrenceville, New Jersey: USDA zone 7a, about 225 days between hard freezes, across 667 acres of town.
- USDA zone
- 7a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 30
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 10
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~225
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 667 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 Lawrenceville's average, not your lot's — a low corner or a tree line moves it. Against Lawrenceville's 225-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Lawrenceville
Each reading below is measured for Lawrenceville itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredLawrenceville runs about 225 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
MeasuredLawrenceville 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 Lawrenceville is in
Lawrenceville sits in the Northern Piedmont — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Lawrenceville's own centroid rather than borrowed from Mercer County.
What Grows in Lawrenceville
Every plant below cleared Lawrenceville's own zone 7a and its 225-day season. Each card opens that plant's New Jersey profile. How we score.
Is it too late to plant in Lawrenceville?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Mar 2; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 30 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 10 — 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 Lawrenceville
Spotted lanternfly documented 3 miles from Lawrenceville, first recorded 2018. What to watch for.
What's on the federal record near Lawrenceville
Closest first, within ~10 miles of Lawrenceville. Listing isn't leaking, and distance isn't exposure.
- LAWRENCEVILLE FIRE COUnderground Storage Tanks · 2400 ft
- LAWRENCEVILLE FUEL COUnderground Storage Tanks · 2600 ft
- 210206-- Ind 1Nitrate · 2600 ft
- EWING-LAWRENCE SEWERAGE AUTHORIUnderground Storage Tanks · 0.5 mi
- 24 30 GEORGE STREETUnderground Storage Tanks · 0.5 mi
- AQUA NEW JERSEYBrownfields · 0.5 mi
- 210188-- PW 4Nitrate · 0.5 mi
- LAWRENCEVILLE PROFESSIONAL BLDGUnderground Storage Tanks · 0.6 mi
- 210194-- PW 5Nitrate · 0.6 mi
- BOBS AUTO SERVICEUnderground Storage Tanks · 0.6 mi
- LAWRENCEVILLE SCHOOLUnderground Storage Tanks · 0.6 mi
- AT&T LAWRENCEVILLE BLDG 2Underground Storage Tanks · 0.7 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Lawrenceville'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 Lawrenceville.
Sources Checked
within ~10 miles of Lawrenceville
Severity Distribution
within ~10 miles of Lawrenceville
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Lawrenceville, Superfund runs higher than the national average — 39 sites within ~10 miles of Lawrenceville. Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
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 Lawrenceville
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 Lawrenceville average
Your land is one point inside Lawrenceville
Everything above resolves to Lawrenceville as a whole — one PHZM band and one 28°F frost record, read across 667 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 Lawrenceville Average
Lawrenceville Average
- ●USDA Zones 7a, averaged across Lawrenceville
- ●One soil character for all of Lawrenceville
- ●Frost dates read at Lawrenceville's scale: Mar 30 to Nov 10
YOUR Parcel
- ✓Your exact zone, not Lawrenceville's 7a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Lawrenceville
Pull a site-specific report for your exact address in Lawrenceville, New Jersey — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Lawrenceville averages can't show:
We read public map data around Lawrenceville — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Lawrenceville average
How we know this about Lawrenceville
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 Lawrenceville’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 Lawrenceville
When does frost risk typically end in Lawrenceville?
The last hard freeze (28°F) in Lawrenceville typically lands around Mar 30, 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 20.
When is the first frost in Lawrenceville?
The first hard freeze (28°F) in Lawrenceville typically arrives around Nov 10, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 27, so the watching starts about Oct 11 — about 225 days after the spring freeze cleared.
How long is the growing season in Lawrenceville?
Measured between 28°F hard freezes, Lawrenceville sees about 225 frost-free days — roughly Mar 30 through Nov 10, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 20 to Oct 27, about 190 days.
Is the soil safe to grow vegetables in Lawrenceville?
The federal record around Lawrenceville runs heavier than most — 2,200 documented sites, mostly Underground Storage Tanks entries (1,119), the nearest Underground Storage Tanks record about 0.5 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 Lawrenceville?
From about Oct 11 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 10 (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 10. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Lawrenceville's scale — its 7a band and its 225-day season. Your yard writes its own version of Lawrenceville'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 Lawrenceville’s own scale
7 of the readings below were taken at Lawrenceville's own scale — its own ~225-day season between 28°F freezes, the 667 acres it covers and 2,200 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Lawrenceville's own USDA hardiness band, zones 7aUSDA PHZM 2023
- Lawrenceville's own 28°F hard-freeze dates, about Mar 30 and Nov 10 and the ~225-day span between themNOAA 1991–2020 Climate Normals
- 2,200 documented contamination sites on the federal record near Lawrenceville, the closest Underground Storage Tanks record about 0.5 miles out from the town centreFederal environmental registers
- Lawrenceville's boundary and the 667 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7a and a ~225-day seasonGrowable Ground crop-matching engine
- The ecoregion at Lawrenceville's own centroid, the Northern PiedmontUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Lawrencevillelydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Lawrenceville's 667 acres read through its county's SSURGO summaryfrom Mercer County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Mercer 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 Mercer County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Lawrenceville's 667 acreswhy one lot differs from the next →
- Which side of Lawrenceville you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 667 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.5 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 Lawrenceville-wide figureread your own land →
More in New Jersey
Wider growing context
What grows across New JerseyLawrenceville sits outside our named growing regions, so New Jersey as a whole is its closest context here.
Nearby growing guides