Larchmont, New York, sits in USDA hardiness zone 7b — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
Expect cabbage, prickly pear, california poppy, and collard greens to be strong candidates here; the deciding factors on any one parcel stay local — soil, sun, and drainage.
Even in Larchmont, 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 Larchmont 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 Larchmont — soil, climate, flood, and parcel records. How we handle your address.
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Larchmont — the short answer
Larchmont, New York: USDA zone 7b, about 255 days between hard freezes, across 701 acres of town.
- USDA zone
- 7b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 20
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 30
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~255
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 701 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 7b is Larchmont's average, not your lot's — a low corner or a tree line moves it. Against Larchmont's 255-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Larchmont
Each reading below is measured for Larchmont itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredLarchmont runs about 255 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
MeasuredLarchmont sits in USDA hardiness zone 7b.
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 Larchmont is in
Larchmont sits in the Northeastern Coastal Zone — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Larchmont's own centroid rather than borrowed from Westchester County.
What Grows in Larchmont
Every plant below cleared Larchmont's own zone 7b and its 255-day season. Each card opens that plant's New York profile. How we score.
Is it too late to plant in Larchmont?
Rarely: the season closes in stages, not all at once, and each stage has its crops. Cool-season crops can go in from around Feb 20; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 20 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 30 — 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 Larchmont
Spotted lanternfly documented 2 miles from Larchmont, first recorded 2021. What to watch for.
What's on the federal record near Larchmont
Closest first, within ~10 miles of Larchmont. Listing isn't leaking, and distance isn't exposure.
- HOURS CLEANERSBrownfields · 750 ft
- BERNIER CLEANERSBrownfields · 800 ft
- CVS PHARMACY #3148Brownfields · 1400 ft
- C & D AUTO BODYBrownfields · 2000 ft
- NYS THRUWAY AUTHORITY BIN 5514600Brownfields · 2100 ft
- APACHE OIL COMPANYBrownfields · 2600 ft
- TONY & SONS AUTO BODYBrownfields · 0.5 mi
- MOBIL OIL CORP SS D3MBrownfields · 0.6 mi
- CITIBANK #10658Brownfields · 0.6 mi
- CHATSWORTH CLEANERS INCBrownfields · 0.6 mi
- EMBASSY CLEANERSBrownfields · 0.6 mi
- WONDER CLEANERSBrownfields · 0.6 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Larchmont'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 Larchmont.
Sources Checked
within ~10 miles of Larchmont
Severity Distribution
within ~10 miles of Larchmont
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Larchmont, Brownfields runs higher than the national average — 1,787 sites within ~10 miles of Larchmont. 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.
Check EPA brownfield remediation status — many sites have completed cleanup with institutional controls.
Check your specific parcel in Larchmont
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 Larchmont average
Your land is one point inside Larchmont
Everything above resolves to Larchmont as a whole — one PHZM band and one 28°F frost record, read across 701 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 Larchmont Average
Larchmont Average
- ●USDA Zones 7b, averaged across Larchmont
- ●One soil character for all of Larchmont
- ●Frost dates read at Larchmont's scale: Mar 20 to Nov 30
YOUR Parcel
- ✓Your exact zone, not Larchmont's 7b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Larchmont
Pull a site-specific report for your exact address in Larchmont, New York — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Larchmont averages can't show:
We read public map data around Larchmont — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Larchmont average
How we know this about Larchmont
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 Larchmont’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 Larchmont
When does frost risk typically end in Larchmont?
The last hard freeze (28°F) in Larchmont typically lands around Mar 20, 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 10.
When is the first frost in Larchmont?
The first hard freeze (28°F) in Larchmont typically arrives around Nov 30, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 16, so the watching starts about Oct 31 — about 255 days after the spring freeze cleared.
How long is the growing season in Larchmont?
Measured between 28°F hard freezes, Larchmont sees about 255 frost-free days — roughly Mar 20 through Nov 30, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 10 to Nov 16, about 220 days.
Is the soil safe to grow vegetables in Larchmont?
The federal record around Larchmont runs heavier than most — 3,661 documented sites, mostly Brownfields entries (1,787), the nearest Brownfields 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 Larchmont?
From about Oct 31 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 Nov 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 Nov 30. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Larchmont's scale — its 7b band and its 255-day season. Your yard writes its own version of Larchmont'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 Larchmont’s own scale
7 of the readings below were taken at Larchmont's own scale — its own ~255-day season between 28°F freezes, the 701 acres it covers and 3,661 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Larchmont's own USDA hardiness band, zones 7bUSDA PHZM 2023
- Larchmont's own 28°F hard-freeze dates, about Mar 20 and Nov 30 and the ~255-day span between themNOAA 1991–2020 Climate Normals
- 3,661 documented contamination sites on the federal record near Larchmont, the closest Brownfields record about 0.1 miles out from the town centreFederal environmental registers
- Larchmont's boundary and the 701 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7b and a ~255-day seasonGrowable Ground crop-matching engine
- The ecoregion at Larchmont's own centroid, the Northeastern Coastal ZoneUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Larchmontlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Larchmont's 701 acres read through its county's SSURGO summaryfrom Westchester County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Westchester County
- The growing challenges every New York grower plans around — written at state scale, so they stay on the state guidefrom New York
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Westchester County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Larchmont's 701 acreswhy one lot differs from the next →
- Which side of Larchmont you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 701 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields 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 Larchmont-wide figureread your own land →
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