South Lancaster, Massachusetts, sits in USDA hardiness zone 6a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
Expect cabbage, hazelnut, lavender, and collard greens to be strong candidates here; the deciding factors on any one parcel stay local — soil, sun, and drainage.
You’re in Central Massachusetts
The inland heart of the state — rolling upland, cooler nights, and a shorter season than the coast. Stony glacial soils that reward the gardener who feeds and drains them.
Even in South 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 South 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 South Lancaster — soil, climate, flood, and parcel records. How we handle your address.
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South Lancaster — the short answer
South Lancaster, Massachusetts: USDA zone 6a, about 201 days between hard freezes, across 849 acres of town.
- USDA zone
- 6a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 8
- 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
- ~201
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 849 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 South Lancaster's average, not your lot's — a low corner or a tree line moves it. Against South Lancaster's 201-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in South Lancaster
Each reading below is measured for South Lancaster itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredSouth Lancaster runs about 201 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
MeasuredSouth Lancaster 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 South Lancaster is in
South Lancaster sits in the Northeastern Coastal Zone — EPA Level III, inside the wider Eastern Temperate Forests. That is read at South Lancaster's own centroid rather than borrowed from Worcester County.
What Grows in South Lancaster
Every plant below cleared South Lancaster's own zone 6a and its 201-day season. Each card opens that plant's Massachusetts profile. How we score.
Is it too late to plant in South Lancaster?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Mar 11; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 8 (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. With a season this long, “too late” mostly means “switch crops” — second sowings and a full fall garden are the norm, with garlic closing the year.
Documented around South Lancaster
Spotted lanternfly documented 7 miles from South Lancaster, first recorded 2020. What to watch for.
What's on the federal record near South Lancaster
Closest first, within ~10 miles of South Lancaster. Listing isn't leaking, and distance isn't exposure.
- Cumberland Farms #2519Underground Storage Tanks · 0.5 mi
- CUMBERLAND FARMS #2147Underground Storage Tanks · 0.5 mi
- LANCASTER A 1 AUTO BODY INCBrownfields · 0.5 mi
- CUMBERLAND FARMS 2519Brownfields · 0.5 mi
- CUMBERLAND FARMS INCBrownfields · 0.5 mi
- CICCONE FAMILY CHIROPRACTICBrownfields · 0.6 mi
- CMSG DBA MAIN ST SUNOCOUnderground Storage Tanks · 0.6 mi
- A L PRIME ENERGY 199 ClintonUnderground Storage Tanks · 0.6 mi
- SHAWS 674Brownfields · 0.6 mi
- A.L. PRIME #199Brownfields · 0.6 mi
- OK CLEANERSBrownfields · 0.6 mi
- MA0057Underground Storage Tanks · 0.6 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from South 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 South Lancaster.
Sources Checked
within ~10 miles of South Lancaster
Severity Distribution
within ~10 miles of South Lancaster
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around South Lancaster, two things run higher than the national average within ~10 miles of South Lancaster — Brownfields (899 sites) and Toxics Release Inventory (109 sites). It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
Brownfields: Brownfield sites are former commercial or industrial properties where legacy soil contamination (heavy metals, PAHs, petroleum compounds) may persist.
Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.
Check EPA brownfield remediation status — many sites have completed cleanup with institutional controls.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Check your specific parcel in South 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 South Lancaster average
Your land is one point inside South Lancaster
Everything above resolves to South Lancaster as a whole — one PHZM band and one 28°F frost record, read across 849 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 South Lancaster Average
South Lancaster Average
- ●USDA Zones 6a, averaged across South Lancaster
- ●One soil character for all of South Lancaster
- ●Frost dates read at South Lancaster's scale: Apr 8 to Oct 26
YOUR Parcel
- ✓Your exact zone, not South Lancaster's 6a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in South Lancaster
Pull a site-specific report for your exact address in South Lancaster, Massachusetts — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that South Lancaster averages can't show:
We read public map data around South Lancaster — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the South Lancaster average
How we know this about South 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 South 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 South Lancaster
When does frost risk typically end in South Lancaster?
The last hard freeze (28°F) in South Lancaster typically lands around Apr 8, 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 29.
When is the first frost in South Lancaster?
The first hard freeze (28°F) in South Lancaster 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 201 days after the spring freeze cleared.
How long is the growing season in South Lancaster?
Measured between 28°F hard freezes, South Lancaster sees about 201 frost-free days — roughly Apr 8 through Oct 26, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 29 to Oct 12, about 166 days.
Is the soil safe to grow vegetables in South Lancaster?
The federal record around South Lancaster runs heavier than most — 1,415 documented sites, mostly Brownfields entries (899), 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 South Lancaster?
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 South Lancaster's scale — its 6a band and its 201-day season. Your yard writes its own version of South 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 South Lancaster’s own scale
7 of the readings below were taken at South Lancaster's own scale — its own ~201-day season between 28°F freezes, the 849 acres it covers and 1,415 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- South Lancaster's own USDA hardiness band, zones 6aUSDA PHZM 2023
- South Lancaster's own 28°F hard-freeze dates, about Apr 8 and Oct 26 and the ~201-day span between themNOAA 1991–2020 Climate Normals
- 1,415 documented contamination sites on the federal record near South Lancaster, the closest Underground Storage Tanks record about 0.5 miles out from the town centreFederal environmental registers
- South Lancaster's boundary and the 849 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6a and a ~201-day seasonGrowable Ground crop-matching engine
- The ecoregion at South Lancaster's own centroid, the Northeastern Coastal ZoneUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of South Lancasterlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so South Lancaster's 849 acres read through its county's SSURGO summaryfrom Worcester County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Worcester 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 Worcester County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among South Lancaster's 849 acreswhy one lot differs from the next →
- Which side of South 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 849 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 South Lancaster-wide figureread your own land →
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