Essex County, in New York, sits in USDA hardiness zone 4a — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
Reliable performers under these conditions include cabbage, cranberry, cilantro, and collard greens; what your own ground favors still comes down to its soil, sun, and drainage.
Essex County lies within the Adirondacks and the Champlain Valley — a regional growing area with its own character.
Grounded in USDA PHZM 2023 · Growable Ground suitability scoring · NOAA 1991–2020 Climate Normals
Essex County holds more than one microclimate.
Soils and elevations shift across Essex County, so your frost dates and drainage aren't the county average. 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 Essex County — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Essex County — the short answer
Essex County, New York: USDA zone 4a, about 143 days between hard freezes, across 1.1M acres.
- USDA zone
- 4a
- USDA PHZM 2023
- Last hard freeze (28°F)
- May 15
- NOAA 1991–2020 Climate Normals, 28°F
- First hard freeze (28°F)
- Oct 5
- NOAA 1991–2020 Climate Normals, 28°F
- Days between freezes
- ~143
- NOAA 1991–2020 Climate Normals, 28°F
- County area
- 1.1M acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. Hard-freeze dates are county 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 4a is Essex County's average, not your lot's — a low corner or a tree line moves it. Against Essex County's 143-day season, see what your own ground reads.
Heat in Essex County
Across a year, Essex County accumulates about 1,202 growing degree days above 50°F, about 1,034 fewer than the middle New York county — ahead of 2 of New York’s 62 counties. Degree days are the heat a crop actually gets to work with — more of them is more room to ripen a long-season crop before the freeze closes the window.
Grounded in PRISM Climate Group, Oregon State University — 1991–2020 monthly normals
Soil in Essex County
Across Essex County, the ground is predominantly Spodosols, where Tunbridge, Becket, and Monadnock are the most extensive named soil series. The soil is generally well drained with a fine sandy loam surface. Topsoil pH runs about 4.2–5.0, very strongly acidic. Rainfall drains through hydrologic group B soils.
Soil order
Spodosols
Drainage
Well drained
Prime farmland
2%
Hydric soils
6%
Soil still varies lot by lot — soil types explained.
How the ground varies across Essex County
The USDA soil survey maps 61% of Essex County as well drained — but another 32% drains differently: 11% somewhat excessively drained, 9% moderately well drained.
Tunbridge is the most extensive named soil at 13% of mapped acres, then Becket (12%) and Monadnock (9%).
Which of them your own lot sits on is a parcel question, not a county one. Check your address for the survey at your boundary.
What this means for growing in Essex County
Each reading below is measured for Essex County itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Drainage
MeasuredThe dominant soils across Essex County are well drained, in hydrologic group B — ground that drains quickly.
The upside is soil you can work early in spring and roots that never drown; the cost is that fast-draining ground dries out fast and leaches nutrients away before plants can use them.
Work in compost and mulch to hold moisture and feed, and water more often in short doses than deep and rarely.
USDA NRCS SSURGO
Surface pH
MeasuredTopsoil across Essex County runs about pH 4.2–5.0, on the acidic side.
Blueberries, potatoes, and rhododendrons thrive in it, but most vegetables start locking out nutrients below about pH 6.0 and grow pale and stunted no matter how much you feed them.
A measured lime application raises pH for the crops that need it — but test first, because the right rate depends on your own soil, not the county average.
USDA NRCS SSURGO
Season length
MeasuredEssex County runs about 143 days between hard freezes — a short growing season.
Long-maturing crops like melons, sweet potatoes, and winter squash can run out of runway before the first hard freeze, ripening late or not at all.
Lead with fast-maturing varieties, and stretch the season on both ends with cold frames, low tunnels, or a greenhouse.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredEssex County sits in USDA hardiness zone 4a.
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 Essex County is in
Essex County spans 2 EPA Level III ecoregions — Northeastern Highlands (81%) and Eastern Great Lakes Lowlands (19%). Which one your land falls in changes what grows wild there and how the ground behaves, and a county-wide answer cannot tell you which.
What Grows in Essex County
We scored all 1,086 plants against Essex County's own USDA zone 4a and its own 143-day season between hard freezes, using the same matching engine that runs a full parcel report. These cleared both. Sun, soil pH and drainage vary lot by lot — those are the parcel questions below. Each card opens that plant's New York profile.
Is it too late to plant in Essex County?
For most of the year, no — what changes is which crops still fit the days remaining. Cool-season crops can go in from around Apr 17; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near May 15 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 5 — long-season crops need about 90 days of runway, quick greens only 30. In a season this compact, fast finishers and cold-hardy greens do the late work, and garlic tucked in before the freeze repays you next summer.
Documented around Essex County
Survey cells within 31 miles of Essex County checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 32 miles off. What to watch for.
- Japanese beetle5 documented records
- monarch butterfly520 documented records
Sighting records, so they follow observers as much as insects.
What gets applied to farmland in Essex County
USGS estimates 1,435 lb of Metolachlor & Metolachlor-s on Essex County farmland in 2019, its largest by weight, ahead of Glyphosate (1,054 lb) and Metolachlor-s (890 lb).
Farmland across the whole county, not any one lot. Check your address for the site-by-site record.
Safe to Grow Here?
What the federal record shows across Essex County — and how to grow with it.
We checked the federal record across Essex County — 545 documented sites across 8 of the 9 source types we track.
The most significant on record: 2 Superfund sites (none NPL-listed). Sites tracked in EPA's Superfund program — from assessment-stage CERCLIS entries to confirmed National Priorities List cleanup sites.
There's a meaningful federal record across Essex County — worth a look before you plant food, not a reason to hold back from growing. Proximity to a documented site is information, not a diagnosis of any one yard. A soil test before new food beds is the sensible precaution here, and the map shows exactly which sites sit where, so you can see what's actually near you.
Sources: EPA, USGS — 1.8M documented sites tracked nationwide across 9 federal source types.
What's on the federal record near Essex County
Closest first, across Essex County. Listing isn't leaking, and distance isn't exposure.
- AUSABLE CLUBUnderground Storage Tanks · 2.9 mi
- NYSDOT BIN 1029720Brownfields · 3.0 mi
- NYSDOT BIN 1029710Brownfields · 3.0 mi
- EX 156Nitrate · 5.4 mi
- KEENE VALLEY GARAGEUnderground Storage Tanks · 5.5 mi
- KEENE CENTRAL SCHOOL DISTRICTUnderground Storage Tanks · 5.5 mi
- KEENE VALLEY NEIGHBORHOOD SER.Underground Storage Tanks · 5.5 mi
- ELK LAKE LODGEBrownfields · 6.6 mi
- RIVERSIDE MOTELUnderground Storage Tanks · 7.0 mi
- DESANTIS AUTO BODY SUPPLYUnderground Storage Tanks · 7.6 mi
- CONSOLIDATED FREIGHTWAYSUnderground Storage Tanks · 7.8 mi
- NYSDOT BIN 1005830Brownfields · 7.9 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Essex County'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 Essex County.
Total Sites
545
across Essex County
Risk Level
Elevated
Highest-severity
2 Superfund sites (none NPL-listed)
Severity Distribution
across Essex County
Highest-Severity Sites
Know Before You Grow
- •Underground tanks leak petroleum as they age — near a former filling station, test the soil.
- •On a private well, test for nitrates: above 10 mg/L the water needs treatment before irrigating.
- •Near a brownfield, raised beds of imported soil give your food clean ground.
Check your specific parcel in Essex County
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 Essex County average
Your land is one point inside Essex County
Everything above resolves to Essex County as a whole — one PHZM band and one county frost record, read across 1.1M 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 county 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 county average.
Your Lot vs the Essex County Average
Essex County Average
- ●USDA Zones 4a, averaged across Essex County
- ●One soil character for all of Essex County
- ●Frost dates read at Essex County's scale: May 15 to Oct 5
YOUR Parcel
- ✓Your exact zone, not Essex County's 4a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your parcel in Essex County
Pull a site-specific report for your exact address in Essex County, New York — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Essex County averages can't show:
We read public map data around Essex County — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Essex County average
How we know this about Essex County
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at county grain; hard-freeze dates from NOAA 1991–2020 28°F normals at this county’s own record where one resolves, and the labelled statewide window where none does; soils from the USDA NRCS SSURGO survey, area-weighted across the county’s own map units; boundaries and acreage from US Census TIGER/Line 2025; the contamination and pesticide records from the federal sources named in their beats above. Where Essex County carries no record of its own, the figure is inherited and labelled — the resolution ledger below names each.
Common questions about Essex County
When does frost risk typically end in Essex County?
The last hard freeze (28°F) in Essex County typically lands around May 15, 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 Jun 5.
How long is the growing season in Essex County?
Measured between 28°F hard freezes, Essex County sees about 143 frost-free days — roughly May 15 through Oct 5, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Jun 5 to Sep 21, about 108 days.
Is the soil safe to grow vegetables in Essex County?
The federal record around Essex County is a meaningful one — 545 documented sites, mostly Underground Storage Tanks entries (330), the nearest Underground Storage Tanks record about 2.9 miles out — so a soil test before new food beds is a sensible precaution here, not a reason to hold back from growing. Remember that proximity to a documented site is information, not a diagnosis of any one yard; the contamination map shows exactly what sits where.
How do gardeners stretch the season in Essex County?
With about 143 frost-free days between hard freezes, Essex County rewards the classic extension moves: floating row cover buys roughly two to four extra weeks at each shoulder — on this season that is a working window nearer 171 to 199 days — and cold frames or low tunnels buy more. Starting transplants indoors ahead of the May 15 hard-freeze normal stretches the season without touching the calendar.
Everything above is measured at Essex County's scale — its 4a band and its 143-day season. Your yard writes its own version of Essex County's numbers: we read soil, sun, drainage and frost at your exact address. Try it for 14 days — no card required.
Will It Grow Here?
Zone fit is the first question — each answer below reads New York's frost window, season length, and soil profile against the plant's real requirements.
What this page reads at Essex County’s own scale
9 of the readings below were taken at Essex County's own scale — its own ~143-day span between 28°F freezes, the 3 most extensive soil series mapped here and 545 documented sites inside its boundary; one is borrowed from a wider read, named and linked below.
Measured here
- Essex County's own USDA hardiness band, zones 4aUSDA PHZM 2023
- Essex County's own 28°F hard-freeze dates and its ~143-day span between themNOAA 1991–2020 Climate Normals
- The soil order, drainage, surface pH, and the 3 most extensive named soil series mapped in Essex CountyUSDA NRCS SSURGO
- 545 documented contamination sites inside the county boundary, distance-sorted from its center — the closest Underground Storage Tanks record about 2.9 miles outFederal environmental registers
- Essex County's boundary and the 1,148,237 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 4a and a ~143-day seasonGrowable Ground crop-matching engine
- The 2 ecoregions Essex County spans, Northeastern Highlands the largestUS EPA Level III Ecoregions
- Open occurrence records documented in Essex County for 2 tracked speciesGBIF derived datasets (CC0 / CC BY 4.0)
- Which agricultural compounds go onto Essex County farmland, and roughly how muchUSGS NAWQA EPest county estimates
Inherited from a wider read
- The growing challenges every New York grower plans around — written at state scale, so they stay on the state guidefrom New York
What this page can’t tell you
- How the season shifts across Essex County — the ~143 days above is one reading at its centre; the 12 towns below each carry their owntowns in this county →
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Essex County's 1,148,237 acreswhy one lot differs from the next →
- Which of those 545 documented sites actually reaches your soil — that needs your address, the wind, and the groundwater directionhow we read the record →
- Where cold air settles, which slopes face the sun, and which way the wind runs on your own ground — none of it survives being averaged over Essex Countyread your own land →