Wallkill, New York, sits in USDA hardiness zone 6b — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
Well-matched crops include cabbage, hazelnut, lavender, and collard greens, and the gap between "grows in the area" and "grows in your yard" is closed by soil, sun, and drainage.
Even in Wallkill, 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 Wallkill 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 Wallkill — soil, climate, flood, and parcel records. How we handle your address.
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Wallkill — the short answer
Wallkill, New York: USDA zone 6b, about 197 days between hard freezes, across 2K acres of town.
- USDA zone
- 6b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 11
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 25
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~197
- 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 6b is Wallkill's average, not your lot's — a low corner or a tree line moves it. Against Wallkill's 197-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Wallkill
Each reading below is measured for Wallkill itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredWallkill runs about 197 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
MeasuredWallkill sits in USDA hardiness zone 6b.
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 Wallkill is in
Wallkill sits in the Ridge and Valley — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Wallkill's own centroid, and it is not what its county reads: Ulster County is mostly Northeastern Highlands. The wider page above you is answering a different question about different ground.
What Grows in Wallkill
Every plant below cleared Wallkill's own zone 6b and its 197-day season. Each card opens that plant's New York profile. How we score.
Is it too late to plant in Wallkill?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Mar 14; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 11 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 25 — long-season crops need about 90 days of runway, quick greens only 30. As the window narrows, the plantings just get faster — fall brassicas, then greens, then garlic to finish.
Documented around Wallkill
Spotted lanternfly documented 3 miles from Wallkill, first recorded 2022. What to watch for.
What's on the federal record near Wallkill
Closest first, within ~10 miles of Wallkill. Listing isn't leaking, and distance isn't exposure.
- WALLKILL SENIOR HIGH SCHOOLUnderground Storage Tanks · 650 ft
- VAN DEUSENUnderground Storage Tanks · 700 ft
- WALLKILL CENTRAL SCHOOL DISTRICTBrownfields · 800 ft
- ABBOTT & MILLS INC.Underground Storage Tanks · 1500 ft
- WALLKILL MIDDLE SCHOOLUnderground Storage Tanks · 0.7 mi
- NYC DEPT CATSKILL AQUADUCTUnderground Storage Tanks · 0.7 mi
- FAIR-RITE PRODUCTS CORPBrownfields · 0.8 mi
- FAIR-RITE PRODUCTS CORPToxics Release Inventory · 0.8 mi
- ESTATE OF HY HILZENUnderground Storage Tanks · 0.8 mi
- OSTRANDER ELEMENTARY SCHOOL.Underground Storage Tanks · 0.8 mi
- RMS & P INCToxics Release Inventory · 0.9 mi
- STAMPLATE INCSuperfund · 0.9 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Wallkill'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 Wallkill.
Sources Checked
within ~10 miles of Wallkill
Severity Distribution
within ~10 miles of Wallkill
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Wallkill, two things run higher than the national average within ~10 miles of Wallkill — Superfund (11 sites) and PFAS (6 sites). It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
Superfund: Superfund sites represent the most severe contamination in the federal system.
PFAS: PFAS (per- and polyfluoroalkyl substances) are called "forever chemicals" because they do not biodegrade.
Commission professional soil testing before any food production (test for heavy metals, VOCs, and SVOCs).
Test irrigation water source — this is the primary pathway for PFAS to reach garden crops.
Check your specific parcel in Wallkill
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 Wallkill average
Your land is one point inside Wallkill
Everything above resolves to Wallkill 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 Wallkill Average
Wallkill Average
- ●USDA Zones 6b, averaged across Wallkill
- ●One soil character for all of Wallkill
- ●Frost dates read at Wallkill's scale: Apr 11 to Oct 25
YOUR Parcel
- ✓Your exact zone, not Wallkill's 6b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Wallkill
Pull a site-specific report for your exact address in Wallkill, New York — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Wallkill averages can't show:
We read public map data around Wallkill — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Wallkill average
How we know this about Wallkill
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 Wallkill’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 Wallkill
When does frost risk typically end in Wallkill?
The last hard freeze (28°F) in Wallkill typically lands around Apr 11, 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 2.
When is the first frost in Wallkill?
The first hard freeze (28°F) in Wallkill typically arrives around Oct 25, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 11, so the watching starts about Sep 25 — about 197 days after the spring freeze cleared.
How long is the growing season in Wallkill?
Measured between 28°F hard freezes, Wallkill sees about 197 frost-free days — roughly Apr 11 through Oct 25, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 2 to Oct 11, about 162 days.
Is the soil safe to grow vegetables in Wallkill?
The federal record around Wallkill is a meaningful one — 597 documented sites, mostly Underground Storage Tanks entries (347), the nearest Underground Storage Tanks record about 0.1 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 I protect my plants from frost in Wallkill?
From about Sep 25 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 25 (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 25. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Wallkill's scale — its 6b band and its 197-day season. Your yard writes its own version of Wallkill'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 Wallkill’s own scale
7 of the readings below were taken at Wallkill's own scale — its own ~197-day season between 28°F freezes, the 1,963 acres it covers and 597 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Wallkill's own USDA hardiness band, zones 6bUSDA PHZM 2023
- Wallkill's own 28°F hard-freeze dates, about Apr 11 and Oct 25 and the ~197-day span between themNOAA 1991–2020 Climate Normals
- 597 documented contamination sites on the federal record near Wallkill, the closest Underground Storage Tanks record about 0.1 miles out from the town centreFederal environmental registers
- Wallkill's boundary and the 1,963 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6b and a ~197-day seasonGrowable Ground crop-matching engine
- Wallkill sits in the Ridge and Valley — not the ecoregion its county mostly readsUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Wallkilllydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Wallkill's 1,963 acres read through its county's SSURGO summaryfrom Ulster County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Ulster 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 Ulster County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Wallkill's 1,963 acreswhy one lot differs from the next →
- Which side of Wallkill you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,963 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks 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 Wallkill-wide figureread your own land →