Somerset, Massachusetts, sits in USDA hardiness zones 5a-6b — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
A short list that earns its place here — tomato, blueberry, sugar maple, and zucchini — with any one site's soil, sun, and drainage making the final cut.
You’re in Southeastern Massachusetts
The low coastal plain of the South Coast — mild, moist, and worked for market vegetables and small orchards for generations. One of the gentler corners of the Massachusetts growing map.
Even in Somerset, 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 Somerset lot. Enter your address and we'll score 1,112 plants against your land's actual soil, sun, and frost.
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
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Quick Facts
USDA Zones
5a-6b
Last Hard Freeze (28°F)
Mar 29
Town normal — light frosts run a few weeks later
First Hard Freeze (28°F)
Nov 27
Town normal — light frosts arrive a few weeks earlier
Town Area
5K acres
Hardiness Zone Range
Zone maps are averages across Somerset. Your yard's slope, trees, and frost pockets shift what actually grows — see your land's exact reading.
Soil varies lot by lot — soil types explained.
What Grows in Somerset
Plants matched to Somerset's USDA zones 5a-6b — each links to its full growing profile.
Is it too late to plant in Somerset?
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 1; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 29 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 27 — 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.
Growing Challenges in Massachusetts
What an experienced grower plans around here — each one has a move.
Short growing season (120-180 frost-free days) limits warm-season crops
Pick fast-maturing varieties and start warm-season crops indoors — a cold frame or low tunnel reliably adds weeks on either end.
Rocky glacial soils require amendment in many areas
A raised bed with imported soil skips the rock-picking entirely and starts your first season on your terms.
Late spring frosts can damage early plantings through mid-May
Trust your local last-frost window over the calendar — hardy greens can go out weeks early while tender transplants wait it out.
Deer pressure is significant in suburban and rural areas
An 8-foot fence — or a slanted double line — is the fix that actually holds; lean the unfenced edges toward deer-resistant herbs, ferns, and bulbs.
For cultivar selection, pest pressure, and planting-time guidance specific to Massachusetts, the UMass Extension is the authoritative local source.
Environmental Intelligence
Understanding what's nearby helps you make informed decisions about where and how to grow.
Sources Checked
within ~10 miles of Somerset
Severity Distribution
within ~10 miles of Somerset
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Somerset, two things run higher than the national average — Superfund (18 sites) and Brownfields (680 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.
Brownfields: Brownfield sites are former commercial or industrial properties where legacy soil contamination (heavy metals, PAHs, petroleum compounds) may persist.
Commission professional soil testing before any food production (test for heavy metals, VOCs, and SVOCs).
Check EPA brownfield remediation status — many sites have completed cleanup with institutional controls.
Check your specific parcel in Somerset
Get exact proximity distances to contamination sources for your specific parcel — plus soil, sun, drainage, and 1,112 plant recommendations.
Three things about your exact spot that zone averages miss:
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources analyzed in seconds
Your Specific Parcel Matters
Somerset Average
- ●USDA Zones 5a-6b
- ●Generic soil type for the area
- ●State-average frost dates
YOUR Parcel
- ✓Your exact hardiness zone
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Somerset
Pull a site-specific report for your exact address in Somerset, Massachusetts — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your exact spot that zone averages miss:
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources analyzed in seconds
Key Growing Facts for Somerset, Massachusetts
- USDA Hardiness Zones: 5a-6b (USDA PHZM 2023)
- Last Hard Freeze (28°F): Mar 29 (town normal, NOAA 1991–2020 Climate Normals — light frosts can follow for a few weeks)
- First Hard Freeze (28°F): Nov 27 (town normal, NOAA 1991–2020 Climate Normals — light frosts can arrive a few weeks earlier)
- Days Between Hard Freezes: ~243 (town normal, NOAA 1991–2020 Climate Normals)
- Land Area: 5K acres (US Census TIGER 2025)
Zone data: USDA ARS Plant Hardiness Zone Map 2023. Climate data: NOAA NCEI. Boundaries: US Census TIGER/Line 2025.
Frequently Asked Questions
What hardiness zone is Somerset, Massachusetts?
Somerset sits in USDA hardiness zones 5a-6b, per the USDA Plant Hardiness Zone Map 2023. Zones reflect average annual extreme minimum temperatures from 1991–2020 weather data.
Is it too late to plant in Somerset?
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 1; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 29 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 27 — 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.
When does frost risk typically end in Somerset?
The last hard freeze (28°F) in Somerset typically lands around Mar 29, per NOAA 1991–2020 climate normals — an earlier marker than the light-frost dates many planting charts quote. That marks the hard freeze, not the last light frost — light frosts can still bite for a few more weeks, so tender transplants usually wait another 2–3 weeks.
When is the first frost in Somerset?
The first hard freeze (28°F) in Somerset typically arrives around Nov 27, per NOAA 1991–2020 climate normals — the point most tender summer crops finish. Lighter frosts usually reach a couple of weeks earlier, so watch the forecast from late summer on and harvest or cover tender plants before the first cold night.
What vegetables grow in Somerset?
Somerset's zones 5a-6b support a wide range — strong performers include Tomato, Blueberry, Sugar Maple, Zucchini, and Kale. What actually takes on any one site comes down to its soil, sun, and drainage, and we score each plant against the real conditions at your address.
Which hardiness zone is Somerset, really?
Officially, Somerset sits in USDA zones 5a-6b (USDA PHZM 2023) — but a zone is a 30-year average of winter's coldest night across an area, and it can't see any one yard. A south-facing slope, a tree line, or a low frost pocket can shift a single site by half a zone either way, which is why neighboring gardeners often quote different numbers. We read the conditions at your exact address — soil, sun, slope, and frost — and score 1,112 plants against what's actually there.
Is the soil safe to grow vegetables in Somerset?
The federal record around Somerset runs heavier than most — 1,322 documented sites — 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 Somerset?
As the season closes around the first 28°F hard freeze near Nov 27 (NOAA 1991–2020 climate normals), a few moves buy time: cover tender plants with floating row cover or an old sheet on still, clear nights, water the soil the afternoon before a freeze so it holds warmth overnight, and harvest frost-tender crops like tomatoes, peppers, and basil before the first hard night. Hardy greens and root crops shrug off light frost and often sweeten after it, so leave them in.
Everything on this page is a Somerset average. Your yard writes its own version — we read soil, sun, drainage, and frost at your exact address. Try it for 14 days — no card required.