Lancaster, New Hampshire, sits in USDA hardiness zone 4a — a zone band wide enough that plant choice, not possibility, is the interesting question.
These conditions suit cabbage, cranberry, turkish rocket, and collard greens — a starting list any specific site will trim or extend with its own soil, sun, and drainage.
Even in Lancaster, 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 Lancaster 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 Lancaster — soil, climate, flood, and parcel records. How we handle your address.
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Lancaster — the short answer
Lancaster, New Hampshire: USDA zone 4a, about 155 days between hard freezes, across 2K acres of town.
- USDA zone
- 4a
- USDA PHZM 2023
- Last hard freeze (28°F)
- May 6
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 8
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~155
- 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 4a is Lancaster's average, not your lot's — a low corner or a tree line moves it. Against Lancaster's 155-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Lancaster
Each reading below is measured for Lancaster itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredLancaster runs about 155 days between hard freezes — a moderate growing season.
There is room for the full run of cool-season crops plus a warm-season main crop, but the calendar is tight enough that a late spring or early fall frost still decides how much finishes.
Time warm-season transplants to your last hard freeze, and a few weeks of season extension turns a near-miss harvest into a sure one.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredLancaster sits in USDA hardiness zone 4a.
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 Lancaster is in
Lancaster sits in the Northeastern Highlands — EPA Level III, inside the wider Northern Forests. That is read at Lancaster's own centroid rather than borrowed from Coos County.
What Grows in Lancaster
Every plant below cleared Lancaster's own zone 4a and its 155-day season. Each card opens that plant's New Hampshire profile. How we score.
Is it too late to plant in Lancaster?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Apr 8; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near May 6 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 8 — long-season crops need about 90 days of runway, quick greens only 30. Late in the year the fall bench takes over — quick greens, radishes, and garlic that repays you next summer.
Documented around Lancaster
Survey cells within 31 miles of Lancaster checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 66 miles off. What to watch for.
What's on the federal record near Lancaster
Closest first, within ~10 miles of Lancaster. Listing isn't leaking, and distance isn't exposure.
- WOODLANDS VETERINARY CLINICBrownfields · 950 ft
- MAIN SEWER PUMP STATIONUnderground Storage Tanks · 1100 ft
- PSNHUnderground Storage Tanks · 1200 ft
- LANCASTER NH MERCURY RELEASESuperfund · 1400 ft
- TOWN OF LANCASTERUnderground Storage Tanks · 1400 ft
- PERREAULT & NAVES PROF ASSNBrownfields · 1500 ft
- OREILLY AUTO ENTERPRISES 5693Brownfields · 1900 ft
- WALGREENS 17167Brownfields · 2000 ft
- BELL ATLANTICUnderground Storage Tanks · 2000 ft
- MONEHANS SERVICE STATIONUnderground Storage Tanks · 2400 ft
- ALCON CORPORATIONUnderground Storage Tanks · 2400 ft
- SEWER LAGOONSUnderground Storage Tanks · 2400 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Lancaster'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 Lancaster.
Total Sites
178
within ~10 miles of Lancaster
Risk Level
Elevated
Highest-severity
1 Superfund site (none NPL-listed)
Sources Checked
within ~10 miles of Lancaster
Severity Distribution
within ~10 miles of Lancaster
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Lancaster, Nitrate runs higher than the national average — 58 sites within ~10 miles of Lancaster. 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 Lancaster
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 Lancaster average
Your land is one point inside Lancaster
Everything above resolves to Lancaster 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 Lancaster Average
Lancaster Average
- ●USDA Zones 4a, averaged across Lancaster
- ●One soil character for all of Lancaster
- ●Frost dates read at Lancaster's scale: May 6 to Oct 8
YOUR Parcel
- ✓Your exact zone, not Lancaster's 4a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Lancaster
Pull a site-specific report for your exact address in Lancaster, New Hampshire — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Lancaster averages can't show:
We read public map data around Lancaster — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Lancaster average
How we know this about Lancaster
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 Lancaster’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 Lancaster
When does frost risk typically end in Lancaster?
The last hard freeze (28°F) in Lancaster typically lands around May 6, 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 May 27.
When is the first frost in Lancaster?
The first hard freeze (28°F) in Lancaster typically arrives around Oct 8, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Sep 24, so the watching starts about Sep 8 — about 155 days after the spring freeze cleared.
How long is the growing season in Lancaster?
Measured between 28°F hard freezes, Lancaster sees about 155 frost-free days — roughly May 6 through Oct 8, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 27 to Sep 24, about 120 days.
Is the soil safe to grow vegetables in Lancaster?
The federal record around Lancaster is a meaningful one — 178 documented sites, mostly Underground Storage Tanks entries (78), the nearest Brownfields 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 Lancaster?
From about Sep 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 Oct 8 (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 Oct 8. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Lancaster's scale — its 4a band and its 155-day season. Your yard writes its own version of Lancaster'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 Lancaster’s own scale
7 of the readings below were taken at Lancaster's own scale — its own ~155-day season between 28°F freezes, the 1,905 acres it covers and 178 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Lancaster's own USDA hardiness band, zones 4aUSDA PHZM 2023
- Lancaster's own 28°F hard-freeze dates, about May 6 and Oct 8 and the ~155-day span between themNOAA 1991–2020 Climate Normals
- 178 documented contamination sites on the federal record near Lancaster, the closest Brownfields record about 0.2 miles out from the town centreFederal environmental registers
- Lancaster's boundary and the 1,905 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 4a and a ~155-day seasonGrowable Ground crop-matching engine
- The ecoregion at Lancaster's own centroid, the Northeastern HighlandsUS EPA Level III Ecoregions
- Lanternfly survey cells around Lancaster checked, none carrying a detectionlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Lancaster's 1,905 acres read through its county's SSURGO summaryfrom Coos County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Coos County
- The growing challenges every New Hampshire grower plans around — written at state scale, so they stay on the state guidefrom New Hampshire
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Coos County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Lancaster's 1,905 acreswhy one lot differs from the next →
- Which side of Lancaster you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,905 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields 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 Lancaster-wide figureread your own land →
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