North Troy, Vermont, sits in USDA hardiness zone 4b — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
The conditions favor cabbage, cranberry, turkish rocket, and collard greens, among others — though every individual site edits that list with its own soil, sun, and drainage.
Even in North Troy, 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 North Troy 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 North Troy — soil, climate, flood, and parcel records. How we handle your address.
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North Troy — the short answer
North Troy, Vermont: USDA zone 4b, about 170 days between hard freezes, across 1K acres of town.
- USDA zone
- 4b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 28
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 15
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~170
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 1K 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 4b is North Troy's average, not your lot's — a low corner or a tree line moves it. Against North Troy's 170-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in North Troy
Each reading below is measured for North Troy itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredNorth Troy runs about 170 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
MeasuredNorth Troy sits in USDA hardiness zone 4b.
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 North Troy is in
North Troy sits in the Northeastern Highlands — EPA Level III, inside the wider Northern Forests. That is read at North Troy's own centroid rather than borrowed from Orleans County.
What Grows in North Troy
Every plant below cleared North Troy's own zone 4b and its 170-day season. Each card opens that plant's Vermont profile. How we score.
Is it too late to plant in North Troy?
For most of the year, no — what changes is which crops still fit the days remaining. Cool-season crops can go in from around Mar 31; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 28 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 15 — long-season crops need about 90 days of runway, quick greens only 30. The tail of the season still works: sixty-day crops into late summer, quick greens after, garlic last of all.
Documented around North Troy
Survey cells within 31 miles of North Troy checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 90 miles off. What to watch for.
What's on the federal record near North Troy
Closest first, within ~10 miles of North Troy. Listing isn't leaking, and distance isn't exposure.
- Former Hamelin Garage PropertyUnderground Storage Tanks · 400 ft
- Starr TransportationUnderground Storage Tanks · 400 ft
- Troy SchoolUnderground Storage Tanks · 550 ft
- North Troy Pit Stop UnstaffedUnderground Storage Tanks · 750 ft
- NORTH TROY PIT STOPBrownfields · 750 ft
- DOLLAR GENERAL STORE #13411Brownfields · 1300 ft
- former Dobler's Cash StoreUnderground Storage Tanks · 1800 ft
- APPALACHIAN ENGINEERED FLOORING INCBrownfields · 0.6 mi
- DESJARLAIS TRUCKINGBrownfields · 0.9 mi
- Charlotte Cote residenceUnderground Storage Tanks · 1.0 mi
- Boutin's Mini MarketUnderground Storage Tanks · 2.5 mi
- G&T BLISS CORP DBA TROY HOAGIESBrownfields · 2.5 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from North Troy'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 North Troy.
Total Sites
62
within ~10 miles of North Troy
Risk Level
Moderate
Highest-severity
1 Toxics Release Inventory facility
Sources Checked
within ~10 miles of North Troy
Severity Distribution
within ~10 miles of North Troy
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around North Troy, Mining runs higher than the national average — 6 sites within ~10 miles of North Troy. Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
Mining: Mining sites — both historic and active — can leach heavy metals (arsenic, lead, cadmium, mercury) into soil and water for centuries after operations cease.
Test soil for heavy metals (lead, arsenic, cadmium, mercury) — this is essential near any mining site.
Check your specific parcel in North Troy
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 North Troy average
Your land is one point inside North Troy
Everything above resolves to North Troy as a whole — one PHZM band and one 28°F frost record, read across 1K 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 North Troy Average
North Troy Average
- ●USDA Zones 4b, averaged across North Troy
- ●One soil character for all of North Troy
- ●Frost dates read at North Troy's scale: Apr 28 to Oct 15
YOUR Parcel
- ✓Your exact zone, not North Troy's 4b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in North Troy
Pull a site-specific report for your exact address in North Troy, Vermont — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that North Troy averages can't show:
We read public map data around North Troy — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the North Troy average
How we know this about North Troy
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 North Troy’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 North Troy
When does frost risk typically end in North Troy?
The last hard freeze (28°F) in North Troy typically lands around Apr 28, 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 19.
When is the first frost in North Troy?
The first hard freeze (28°F) in North Troy typically arrives around Oct 15, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 1, so the watching starts about Sep 15 — about 170 days after the spring freeze cleared.
How long is the growing season in North Troy?
Measured between 28°F hard freezes, North Troy sees about 170 frost-free days — roughly Apr 28 through Oct 15, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 19 to Oct 1, about 135 days.
Is the soil safe to grow vegetables in North Troy?
The federal record around North Troy shows 62 documented sites, mostly Underground Storage Tanks entries (30), the nearest Underground Storage Tanks record under a tenth of a mile out — a typical footprint for a growing area, and proximity to a documented site is information, not a diagnosis of any one yard. It's worth seeing which recorded sites sit closest to where you grow, and testing the soil before new food beds near any of them.
How do I protect my plants from frost in North Troy?
From about Sep 15 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 15 (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 15. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at North Troy's scale — its 4b band and its 170-day season. Your yard writes its own version of North Troy'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 North Troy’s own scale
7 of the readings below were taken at North Troy's own scale — its own ~170-day season between 28°F freezes, the 1,199 acres it covers and 62 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- North Troy's own USDA hardiness band, zones 4bUSDA PHZM 2023
- North Troy's own 28°F hard-freeze dates, about Apr 28 and Oct 15 and the ~170-day span between themNOAA 1991–2020 Climate Normals
- 62 documented contamination sites on the federal record near North Troy, the closest Underground Storage Tanks record under a tenth of a mile out from the town centreFederal environmental registers
- North Troy's boundary and the 1,199 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 4b and a ~170-day seasonGrowable Ground crop-matching engine
- The ecoregion at North Troy's own centroid, the Northeastern HighlandsUS EPA Level III Ecoregions
- Lanternfly survey cells around North Troy checked, none carrying a detectionlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so North Troy's 1,199 acres read through its county's SSURGO summaryfrom Orleans County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Orleans County
- The growing challenges every Vermont grower plans around — written at state scale, so they stay on the state guidefrom Vermont
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Orleans County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among North Troy's 1,199 acreswhy one lot differs from the next →
- Which side of North Troy you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,199 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks 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 North Troy-wide figureread your own land →
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