Mount Kisco, New York, sits in USDA hardiness zone 7a — a zone band wide enough that plant choice, not possibility, is the interesting question.
Expect cabbage, hazelnut, 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 Mount Kisco, 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 Mount Kisco 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 Mount Kisco — soil, climate, flood, and parcel records. How we handle your address.
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Mount Kisco — the short answer
Mount Kisco, New York: USDA zone 7a, about 223 days between hard freezes, across 2K acres of town.
- USDA zone
- 7a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 1
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 10
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~223
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 2K 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 7a is Mount Kisco's average, not your lot's — a low corner or a tree line moves it. Against Mount Kisco's 223-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Mount Kisco
Each reading below is measured for Mount Kisco itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredMount Kisco runs about 223 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
MeasuredMount Kisco sits in USDA hardiness zone 7a.
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 Mount Kisco is in
Mount Kisco sits in the Northeastern Coastal Zone — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Mount Kisco's own centroid rather than borrowed from Westchester County.
What Grows in Mount Kisco
Every plant below cleared Mount Kisco's own zone 7a and its 223-day season. Each card opens that plant's New York profile. How we score.
Is it too late to plant in Mount Kisco?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Mar 4; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 1 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 10 — 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 Mount Kisco
Spotted lanternfly documented 3 miles from Mount Kisco, first recorded 2023. What to watch for.
What's on the federal record near Mount Kisco
Closest first, within ~10 miles of Mount Kisco. Listing isn't leaking, and distance isn't exposure.
- BEDFORD CENTRAL SCHOOL DISTRICT MT KISCO ELEMENTARY SCHOOLBrownfields · 350 ft
- MT KISCO ELEMENTARY SCHOOLBrownfields · 350 ft
- 200 EAST MAIN LLC-PRESTIGE CLEANERS BCP C360183Brownfields · 800 ft
- YESHIVA FARM SETTLEMENTPFAS · 1400 ft
- MOUNT KISCO WATER DEPARTMENTPFAS · 1400 ft
- DBA RITE AID #03432Brownfields · 1900 ft
- MOUNT KISCO WATER DEPARTMENTBrownfields · 1900 ft
- CON EDISONBrownfields · 2100 ft
- NORTHERN WESTCHESTER HOSPITAL CENTERBrownfields · 2200 ft
- FRIEDLAND PROPERTIESBrownfields · 2200 ft
- EXTRA SPACE STORAGE - MT. VERNON NORTHWESTUnderground Storage Tanks · 2200 ft
- CVS PHARMACY #1997Brownfields · 2300 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Mount Kisco'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 Mount Kisco.
Sources Checked
within ~10 miles of Mount Kisco
Severity Distribution
within ~10 miles of Mount Kisco
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Mount Kisco, two things run higher than the national average within ~10 miles of Mount Kisco — PFAS (15 sites) and Brownfields (361 sites). Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
PFAS: PFAS (per- and polyfluoroalkyl substances) are called "forever chemicals" because they do not biodegrade.
Brownfields: Brownfield sites are former commercial or industrial properties where legacy soil contamination (heavy metals, PAHs, petroleum compounds) may persist.
Test irrigation water source — this is the primary pathway for PFAS to reach garden crops.
Check EPA brownfield remediation status — many sites have completed cleanup with institutional controls.
Check your specific parcel in Mount Kisco
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 Mount Kisco average
Your land is one point inside Mount Kisco
Everything above resolves to Mount Kisco as a whole — one PHZM band and one 28°F frost record, read across 2K 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 Mount Kisco Average
Mount Kisco Average
- ●USDA Zones 7a, averaged across Mount Kisco
- ●One soil character for all of Mount Kisco
- ●Frost dates read at Mount Kisco's scale: Apr 1 to Nov 10
YOUR Parcel
- ✓Your exact zone, not Mount Kisco's 7a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Mount Kisco
Pull a site-specific report for your exact address in Mount Kisco, New York — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Mount Kisco averages can't show:
We read public map data around Mount Kisco — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Mount Kisco average
How we know this about Mount Kisco
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 Mount Kisco’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 Mount Kisco
When does frost risk typically end in Mount Kisco?
The last hard freeze (28°F) in Mount Kisco typically lands around Apr 1, 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 22.
When is the first frost in Mount Kisco?
The first hard freeze (28°F) in Mount Kisco typically arrives around Nov 10, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 27, so the watching starts about Oct 11 — about 223 days after the spring freeze cleared.
How long is the growing season in Mount Kisco?
Measured between 28°F hard freezes, Mount Kisco sees about 223 frost-free days — roughly Apr 1 through Nov 10, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 22 to Oct 27, about 188 days.
Is the soil safe to grow vegetables in Mount Kisco?
The federal record around Mount Kisco runs heavier than most — 541 documented sites, mostly Brownfields entries (361), the nearest Brownfields 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 Mount Kisco?
From about Oct 11 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 10 (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 10. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Mount Kisco's scale — its 7a band and its 223-day season. Your yard writes its own version of Mount Kisco'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 Mount Kisco’s own scale
7 of the readings below were taken at Mount Kisco's own scale — its own ~223-day season between 28°F freezes, the 1,946 acres it covers and 541 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Mount Kisco's own USDA hardiness band, zones 7aUSDA PHZM 2023
- Mount Kisco's own 28°F hard-freeze dates, about Apr 1 and Nov 10 and the ~223-day span between themNOAA 1991–2020 Climate Normals
- 541 documented contamination sites on the federal record near Mount Kisco, the closest Brownfields record under a tenth of a mile out from the town centreFederal environmental registers
- Mount Kisco's boundary and the 1,946 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7a and a ~223-day seasonGrowable Ground crop-matching engine
- The ecoregion at Mount Kisco's own centroid, the Northeastern Coastal ZoneUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Mount Kiscolydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Mount Kisco's 1,946 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 Mount Kisco's 1,946 acreswhy one lot differs from the next →
- Which side of Mount Kisco you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,946 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields 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 Mount Kisco-wide figureread your own land →
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