Amesbury, Massachusetts, sits in USDA hardiness zone 6a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
Reliable performers under these conditions include cabbage, hazelnut, lavender, and collard greens; what your own ground favors still comes down to its soil, sun, and drainage.
You’re in North Shore
The settled coast north of Boston — salt air, tidy town lots, and sea-tempered winters that hold the cold off a little longer than the hills inland. Wind and salt spray are the near-shore gardener's companions here.
Even in Amesbury, 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 Amesbury 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 Amesbury — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Amesbury — the short answer
Amesbury, Massachusetts: USDA zone 6a, about 203 days between hard freezes, across 8K acres of city.
- USDA zone
- 6a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 10
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 30
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~203
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 8K 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 6a is Amesbury's average, not your lot's — a low corner or a tree line moves it. Against Amesbury's 203-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Amesbury
Each reading below is measured for Amesbury itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredAmesbury runs about 203 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
MeasuredAmesbury sits in USDA hardiness zone 6a.
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 Amesbury is in
Amesbury sits in the Northeastern Coastal Zone — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Amesbury's own centroid rather than borrowed from Essex County.
What Grows in Amesbury
Every plant below cleared Amesbury's own zone 6a and its 203-day season. Each card opens that plant's Massachusetts profile. How we score.
Is it too late to plant in Amesbury?
Too late for some crops, right on time for others — a growing season is a sequence, not a deadline. Cool-season crops can go in from around Mar 13; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 10 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 30 — long-season crops need about 90 days of runway, quick greens only 30. Here the season winds down slowly: late sowings, a real autumn harvest, and garlic in the ground before the first hard freeze.
Documented around Amesbury
Spotted lanternfly documented 10 miles from Amesbury, first recorded 2021. What to watch for.
What's on the federal record near Amesbury
Closest first, within ~10 miles of Amesbury. Listing isn't leaking, and distance isn't exposure.
- AMESBURY DPW WATER DIV.PFAS · 0 ft
- NEW ENGLAND CONCRETE PRODUCTS INCUnderground Storage Tanks · 2100 ft
- MACLELLAN AMESBURYToxics Release Inventory · 2600 ft
- WOODSOM FARMS TRUSTUnderground Storage Tanks · 2600 ft
- NEW ENGLAND CONCRETE PRODUCTSBrownfields · 0.6 mi
- NEW ENGLAND CONCRETE PRODUCTSToxics Release Inventory · 0.6 mi
- COOK RODBrownfields · 0.6 mi
- ADAMS-RUSSELL INC BRAZONICS DIVISIONToxics Release Inventory · 0.6 mi
- BRAZONICSToxics Release Inventory · 0.6 mi
- AMESBURY HIGH SCHOOLBrownfields · 0.6 mi
- MICROFAB INCBrownfields · 0.6 mi
- MICROFAB INCSuperfund · 0.6 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Amesbury'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 Amesbury.
Sources Checked
within ~10 miles of Amesbury
Severity Distribution
within ~10 miles of Amesbury
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Amesbury, two things run higher than the national average within ~10 miles of Amesbury — Superfund (22 sites) and PFAS (12 sites). 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.
PFAS: PFAS (per- and polyfluoroalkyl substances) are called "forever chemicals" because they do not biodegrade.
Commission professional soil testing before any food production (test for heavy metals, VOCs, and SVOCs).
Test irrigation water source — this is the primary pathway for PFAS to reach garden crops.
Check your specific parcel in Amesbury
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 Amesbury average
Your land is one point inside Amesbury
Everything above resolves to Amesbury as a whole — one PHZM band and one 28°F frost record, read across 8K 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 city 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 Amesbury Average
Amesbury Average
- ●USDA Zones 6a, averaged across Amesbury
- ●One soil character for all of Amesbury
- ●Frost dates read at Amesbury's scale: Apr 10 to Oct 30
YOUR Parcel
- ✓Your exact zone, not Amesbury's 6a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Amesbury
Pull a site-specific report for your exact address in Amesbury, Massachusetts — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Amesbury averages can't show:
We read public map data around Amesbury — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Amesbury average
How we know this about Amesbury
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at this city’s own centroid; hard-freeze dates from NOAA 1991–2020 28°F normals at Amesbury’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 city grain anywhere on this page — there is no city-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 Amesbury
When does frost risk typically end in Amesbury?
The last hard freeze (28°F) in Amesbury typically lands around Apr 10, 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 1.
When is the first frost in Amesbury?
The first hard freeze (28°F) in Amesbury typically arrives around Oct 30, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 16, so the watching starts about Sep 30 — about 203 days after the spring freeze cleared.
How long is the growing season in Amesbury?
Measured between 28°F hard freezes, Amesbury sees about 203 frost-free days — roughly Apr 10 through Oct 30, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 1 to Oct 16, about 168 days.
Is the soil safe to grow vegetables in Amesbury?
The federal record around Amesbury runs heavier than most — 1,153 documented sites, mostly Brownfields entries (571), the nearest PFAS record under a tenth of a mile 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 Amesbury?
From about Sep 30 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 30 (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 30. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Amesbury's scale — its 6a band and its 203-day season. Your yard writes its own version of Amesbury'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 Amesbury’s own scale
7 of the readings below were taken at Amesbury's own scale — its own ~203-day season between 28°F freezes, the 7,867 acres it covers and 1,153 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Amesbury's own USDA hardiness band, zones 6aUSDA PHZM 2023
- Amesbury's own 28°F hard-freeze dates, about Apr 10 and Oct 30 and the ~203-day span between themNOAA 1991–2020 Climate Normals
- 1,153 documented contamination sites on the federal record near Amesbury, the closest PFAS record under a tenth of a mile out from the town centreFederal environmental registers
- Amesbury's boundary and the 7,867 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6a and a ~203-day seasonGrowable Ground crop-matching engine
- The ecoregion at Amesbury's own centroid, the Northeastern Coastal ZoneUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Amesburylydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Amesbury's 7,867 acres read through its county's SSURGO summaryfrom Essex County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Essex County
- The growing challenges every Massachusetts grower plans around — written at state scale, so they stay on the state guidefrom Massachusetts
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Essex County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Amesbury's 7,867 acreswhy one lot differs from the next →
- Which side of Amesbury you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 7,867 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest PFAS record under a tenth of a mile 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 Amesbury-wide figureread your own land →
More in Massachusetts
Growing region
Nearby growing guides