Lexington, Massachusetts, sits in USDA hardiness zone 6b — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
Expect cabbage, blackberry, california poppy, and collard greens to be strong candidates here; the deciding factors on any one parcel stay local — soil, sun, and drainage.
You’re in Greater Boston
The state's dense urban core, where growing means raised beds, community plots, and back-lot kitchen gardens more than open field. A long, mild season for the region — but city soil is the thing to know before you dig.
Even in Lexington, 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 Lexington 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 Lexington — soil, climate, flood, and parcel records. How we handle your address.
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Lexington — the short answer
Lexington, Massachusetts: USDA zone 6b, about 195 days between hard freezes, across 11K acres of town.
- USDA zone
- 6b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 14
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 26
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~195
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 11K 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 6b is Lexington's average, not your lot's — a low corner or a tree line moves it. Against Lexington's 195-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Lexington
Each reading below is measured for Lexington itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredLexington runs about 195 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
MeasuredLexington sits in USDA hardiness zone 6b.
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 Lexington is in
Lexington sits in the Northeastern Coastal Zone — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Lexington's own centroid rather than borrowed from Middlesex County.
What Grows in Lexington
Every plant below cleared Lexington's own zone 6b and its 195-day season. Each card opens that plant's Massachusetts profile. How we score.
Is it too late to plant in Lexington?
Rarely: the season closes in stages, not all at once, and each stage has its crops. Cool-season crops can go in from around Mar 17; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 14 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 26 — long-season crops need about 90 days of runway, quick greens only 30. Even past midsummer there is room for a true fall garden here, and garlic planted near the close carries the momentum into next year.
Documented around Lexington
Spotted lanternfly documented 3 miles from Lexington, first recorded 2021. What to watch for.
What's on the federal record near Lexington
Closest first, within ~10 miles of Lexington. Listing isn't leaking, and distance isn't exposure.
- VERIZON MASSACHUSETTS #624307Underground Storage Tanks · 600 ft
- LYON FAMILY TRUSTBrownfields · 750 ft
- CVS 0307Brownfields · 1100 ft
- MICHAEL FORREST # 5815Underground Storage Tanks · 2300 ft
- STOP & SHOP SUPERMARKET 0491Brownfields · 0.5 mi
- Lexington Auto ServiceUnderground Storage Tanks · 0.5 mi
- CUMBERLAND FARMS INCBrownfields · 0.5 mi
- SHELL SERVICE STATION #137779Underground Storage Tanks · 0.5 mi
- BATTLE GREEN SHELL STATIONBrownfields · 0.6 mi
- SHERWIN WILLAMS 5416Brownfields · 0.6 mi
- WALGREENS 01863Brownfields · 0.6 mi
- MUNROE CENTER FOR THE ARTSBrownfields · 0.6 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Lexington'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 Lexington.
Sources Checked
within ~10 miles of Lexington
Severity Distribution
within ~10 miles of Lexington
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Lexington, Brownfields runs higher than the national average — 4,272 sites within ~10 miles of Lexington. Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
Brownfields: Brownfield sites are former commercial or industrial properties where legacy soil contamination (heavy metals, PAHs, petroleum compounds) may persist.
Check EPA brownfield remediation status — many sites have completed cleanup with institutional controls.
Check your specific parcel in Lexington
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 Lexington average
Your land is one point inside Lexington
Everything above resolves to Lexington as a whole — one PHZM band and one 28°F frost record, read across 11K 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 Lexington Average
Lexington Average
- ●USDA Zones 6b, averaged across Lexington
- ●One soil character for all of Lexington
- ●Frost dates read at Lexington's scale: Apr 14 to Oct 26
YOUR Parcel
- ✓Your exact zone, not Lexington's 6b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Lexington
Pull a site-specific report for your exact address in Lexington, Massachusetts — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Lexington averages can't show:
We read public map data around Lexington — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Lexington average
How we know this about Lexington
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 Lexington’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 Lexington
When does frost risk typically end in Lexington?
The last hard freeze (28°F) in Lexington typically lands around Apr 14, 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 5.
When is the first frost in Lexington?
The first hard freeze (28°F) in Lexington typically arrives around Oct 26, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 12, so the watching starts about Sep 26 — about 195 days after the spring freeze cleared.
How long is the growing season in Lexington?
Measured between 28°F hard freezes, Lexington sees about 195 frost-free days — roughly Apr 14 through Oct 26, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 5 to Oct 12, about 160 days.
Is the soil safe to grow vegetables in Lexington?
The federal record around Lexington runs heavier than most — 6,059 documented sites, mostly Brownfields entries (4,272), the nearest Underground Storage Tanks record about 0.1 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 Lexington?
From about Sep 26 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 26 (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 26. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Lexington's scale — its 6b band and its 195-day season. Your yard writes its own version of Lexington'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 Lexington’s own scale
7 of the readings below were taken at Lexington's own scale — its own ~195-day season between 28°F freezes, the 10,517 acres it covers and 6,059 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Lexington's own USDA hardiness band, zones 6bUSDA PHZM 2023
- Lexington's own 28°F hard-freeze dates, about Apr 14 and Oct 26 and the ~195-day span between themNOAA 1991–2020 Climate Normals
- 6,059 documented contamination sites on the federal record near Lexington, the closest Underground Storage Tanks record about 0.1 miles out from the town centreFederal environmental registers
- Lexington's boundary and the 10,517 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6b and a ~195-day seasonGrowable Ground crop-matching engine
- The ecoregion at Lexington's own centroid, the Northeastern Coastal ZoneUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Lexingtonlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Lexington's 10,517 acres read through its county's SSURGO summaryfrom Middlesex County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Middlesex 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 Middlesex County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Lexington's 10,517 acreswhy one lot differs from the next →
- Which side of Lexington you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 10,517 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.1 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 Lexington-wide figureread your own land →
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