Mount Sinai, New York, sits in USDA hardiness zone 7b — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
Among the crops suited to this profile: cabbage, prickly pear, california poppy, and collard greens. The site-level story — soil, sun, drainage — decides the rest.
Even in Mount Sinai, 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 Sinai 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 Sinai — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Mount Sinai — the short answer
Mount Sinai, New York: USDA zone 7b, about 239 days between hard freezes, across 4K acres of town.
- USDA zone
- 7b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 27
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 21
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~239
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 4K 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 Mount Sinai's average, not your lot's — a low corner or a tree line moves it. Against Mount Sinai's 239-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Mount Sinai
Each reading below is measured for Mount Sinai itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredMount Sinai runs about 239 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 Sinai 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 Mount Sinai is in
Mount Sinai sits in the Northeastern Coastal Zone — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Mount Sinai's own centroid, and it is not what its county reads: Suffolk County is mostly Atlantic Coastal Pine Barrens. The wider page above you is answering a different question about different ground.
What Grows in Mount Sinai
Every plant below cleared Mount Sinai's own zone 7b and its 239-day season. Each card opens that plant's New York profile. How we score.
Is it too late to plant in Mount Sinai?
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 Feb 27; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 27 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 21 — long-season crops need about 90 days of runway, quick greens only 30. A long window like this one runs successions deep into fall — and even its last weeks take quick greens and garlic.
Documented around Mount Sinai
Spotted lanternfly documented 3 miles from Mount Sinai, first recorded 2023. What to watch for.
What's on the federal record near Mount Sinai
Closest first, within ~10 miles of Mount Sinai. Listing isn't leaking, and distance isn't exposure.
- MOUNT SINAI MIDDLE SCHOOLUnderground Storage Tanks · 1200 ft
- S 68230. 1Nitrate · 2200 ft
- VALERO GAS STATIONBrownfields · 2300 ft
- A TO Z CUSTOM COLOUR CORPBrownfields · 2300 ft
- SAV-ON PRINTING INCBrownfields · 2300 ft
- TRANSMEDIC TRANSMISSIONSBrownfields · 2600 ft
- KAHNS DMD PC & HLUDZINSKIBrownfields · 0.5 mi
- NORTHGATE CLEANERSBrownfields · 0.6 mi
- SCOTMANS COLLISION CORPBrownfields · 0.6 mi
- CITGO S/S 7-ELEVEN STORE #25627Underground Storage Tanks · 0.7 mi
- LONG ISLAND PHOTO LABS INCBrownfields · 0.9 mi
- PROGRESSIVE DENTAL CARE OF SUFFOLKBrownfields · 0.9 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Mount Sinai'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 Sinai.
Sources Checked
within ~10 miles of Mount Sinai
Severity Distribution
within ~10 miles of Mount Sinai
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Mount Sinai, Nitrate runs higher than the national average — 494 sites within ~10 miles of Mount Sinai. That's not a problem with your land — it's information about it.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in Mount Sinai
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 Sinai average
Your land is one point inside Mount Sinai
Everything above resolves to Mount Sinai as a whole — one PHZM band and one 28°F frost record, read across 4K 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 Sinai Average
Mount Sinai Average
- ●USDA Zones 7b, averaged across Mount Sinai
- ●One soil character for all of Mount Sinai
- ●Frost dates read at Mount Sinai's scale: Mar 27 to Nov 21
YOUR Parcel
- ✓Your exact zone, not Mount Sinai's 7b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Mount Sinai
Pull a site-specific report for your exact address in Mount Sinai, New York — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Mount Sinai averages can't show:
We read public map data around Mount Sinai — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Mount Sinai average
How we know this about Mount Sinai
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 Sinai’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 Sinai
When does frost risk typically end in Mount Sinai?
The last hard freeze (28°F) in Mount Sinai typically lands around Mar 27, 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 17.
When is the first frost in Mount Sinai?
The first hard freeze (28°F) in Mount Sinai typically arrives around Nov 21, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 7, so the watching starts about Oct 22 — about 239 days after the spring freeze cleared.
How long is the growing season in Mount Sinai?
Measured between 28°F hard freezes, Mount Sinai sees about 239 frost-free days — roughly Mar 27 through Nov 21, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 17 to Nov 7, about 204 days.
Is the soil safe to grow vegetables in Mount Sinai?
The federal record around Mount Sinai runs heavier than most — 1,049 documented sites, mostly Nitrate entries (494), the nearest Underground Storage Tanks record about 0.2 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 Mount Sinai?
From about Oct 22 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 21 (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 21. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Mount Sinai's scale — its 7b band and its 239-day season. Your yard writes its own version of Mount Sinai'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 Sinai’s own scale
7 of the readings below were taken at Mount Sinai's own scale — its own ~239-day season between 28°F freezes, the 3,839 acres it covers and 1,049 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Mount Sinai's own USDA hardiness band, zones 7bUSDA PHZM 2023
- Mount Sinai's own 28°F hard-freeze dates, about Mar 27 and Nov 21 and the ~239-day span between themNOAA 1991–2020 Climate Normals
- 1,049 documented contamination sites on the federal record near Mount Sinai, the closest Underground Storage Tanks record about 0.2 miles out from the town centreFederal environmental registers
- Mount Sinai's boundary and the 3,839 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7b and a ~239-day seasonGrowable Ground crop-matching engine
- Mount Sinai sits in the Northeastern Coastal Zone — not the ecoregion its county mostly readsUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Mount Sinailydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Mount Sinai's 3,839 acres read through its county's SSURGO summaryfrom Suffolk County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Suffolk 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 Suffolk County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Mount Sinai's 3,839 acreswhy one lot differs from the next →
- Which side of Mount Sinai you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 3,839 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.2 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 Mount Sinai-wide figureread your own land →