Yes — Strong Match
Egyptian walking onion (zones 3-9) covers every zone New York contains (4a-7b), so hardiness is not what limits it anywhere in the state.
Egyptian Walking Onion in New York — the short answer
Egyptian Walking Onion in New York: hardy in zones 3–9, full sun, against a state median of ~185 frost-free days.
- Plant zones
- 3-9
- Manual horticultural correction (source not retained); NC State Extension and Missouri Botanical Garden, with the remaining rows from other published sources or Growable Ground compilation
- New York zones
- 4a-7b
- USDA PHZM 2023
- Frost window
- Apr 13 - Apr 29 – Oct 18 - Nov 5
- NOAA RCC ACIS 1991-2020, 28°F
- Shortest county season
- 136 days
- NOAA Regional Climate Centers ACIS, 1991-2020, county 28°F killing freeze
- Days to maturity
- 240 days
- Growable Ground Plant Database
Plant data: Growable Ground Plant Database, compiled from FAO ECOCROP, USDA PLANTS and university Extension sources — per-field provenance varies and is published with the dataset.
Your yard isn't the whole zone.
New York spans zones 4a-7b, but your yard has its own microclimate — slope, trees, and low spots shift frost and sun across a single parcel. Enter your address and we'll score egyptian walking onion against your land's actual soil, sun, and frost.
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
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New York is not one climate
A single New York answer averages 62 counties whose growing seasons are 122 days apart — from 136 frost-free days in Hamilton County to 258 in New York County. Which end of that your land sits nearer changes what egyptian walking onion can finish before the first hard freeze.
The middle half of 62 counties runs 173–204 days, with a median of 184 days — a 122-day span end to end.
Measured across 62 New York counties. NOAA Regional Climate Centers ACIS, 1991-2020, county 28°F killing freeze. Quartiles are order statistics — every figure shown is a value a real county recorded, not an interpolation. Your own site sits somewhere inside this range; a parcel report resolves where.
Where in New York Fits Best
Even within New York's zones 4a-7b, county microclimates differ enough to change what thrives. These counties carry the closest zone match for egyptian walking onion (USDA PHZM 2023):
Zone Comparison
Egyptian Walking Onion Needs
- USDA Zones: 3-9
- Frost-Free Days: 120+
- Sun: Full Sun
- Mature size: 2.5 ft tall
- Picking window: ~60 days of harvest
- Drought tolerance: Medium
New York Has
- USDA Zones: 4a-7b
- Last Hard Freeze (28°F): Apr 13 - Apr 29
- First Hard Freeze (28°F): Oct 18 - Nov 5
- Annual Rainfall: 30-50 inches
- Common Soils: Glacial till, Silt loam, Clay loam
Plant Zone Range (zones 3-9)
Preferred Soil pH
Plant data: Growable Ground Plant Database, compiled from FAO ECOCROP, USDA PLANTS, and university Extension sources — per-field provenance varies and is published with the dataset. State data: USDA ARS PHZM 2023, NOAA Climate Normals, NRCS SSURGO.
When to Plant Egyptian Walking Onion in New York
The frost window
Across New York, the last spring hard freeze (28°F) clears between Apr 13 and Apr 29, and the first fall hard freeze lands between Oct 18 and Nov 5 (NOAA Regional Climate Centers ACIS, 1991-2020). Counting from the latest last freeze to the earliest first freeze, that's a 172-day window you can count on — up to 206 days on a mild site in a kind year. That marks the hard freeze, not the last light frost, so tender transplants usually wait another 2-3 weeks.
Frost hardiness
Egyptian Walking Onion takes cold down to about 23°F before a freeze kills it (FAO ECOCROP), so you can plant on the early side of New York's window — even a few weeks before the final hard freeze. That is the point where cold damages growing tissue, not a winter-survival floor — an established perennial comes through far colder while dormant, which is what its hardiness zone tells you.
Days to maturity vs. the window
At 240 days to maturity (Growable Ground Plant Database), even New York's kindest 206-day season runs short — challenging without season extension. An indoor start plus row cover on both shoulders of the season closes the gap.
Timing tuned to sub-state frost dates — Hamilton County, not the statewide average.
Frost window: NOAA Climate Normals 1991-2020. Plant timing fields: Growable Ground Plant Database — frost-free days from FAO ECOCROP, days to harvest from university Extension production guides, and growing-degree-day and chill-hour minimums that are compilation estimates rather than published figures. Your site's own frost dates can run earlier or later than the state range — a parcel report pins them down.
Growing Season Fit
The zone check says egyptian walking onion survives winter here. Whether the season is long enough — and warm enough — is a different question.
Frost-free days
Egyptian Walking Onion wants 120+ frost-free days; a typical New York site sees ~185 (NOAA Regional Climate Centers ACIS, 1991-2020). That leaves comfortable headroom for succession planting.
Growing degree days
Egyptian Walking Onion needs ~1200 GDD (base 50°F) to ripen. The state median runs ~2042 GDD (from PRISM 1991-2020 climate normals), so New York's typical season clears that easily.
GDD and chill-hour figures are computed from PRISM 1991-2020 monthly climate normals; frost-free days from NOAA Regional Climate Centers ACIS, 1991-2020. Each is the state median across its counties (P25/P75 span the within-state spread). Hardiness-zone range is USDA PHZM 2023.
Soil + Drainage Fit
Egyptian Walking Onion tolerates a wide pH range (pH 4.5-7.5) — 3 units, acid ground through alkaline — so soil acidity is rarely what limits it in New York. A soil test is still worth having, but for what else it tells you about this site, not to clear this plant. It will grow across that whole span, but it does best between pH 6 and 6.5 — worth knowing before you decide whether a New York soil test result is a problem or just a number. Drainage matters: this plant wants well (dry spells). If your New York site is heavier clay or sits in a low spot, raised beds or amendment with compost solve it.
Your land, not the state average
Whether egyptian walking onion is safe to eat from New York soil is a block-by-block question, not a town-wide one — 75,562 documented contamination sites mean levels spike on some parcels and not the one next door. Egyptian Walking Onion roots to about 19 inches, so it is the top 19 inches under your address that decide what it takes up, so only a test on your address settles it.
Check your parcel → Source: USDA NRCS SSURGO + EPA/state contamination databases.
Plant pH requirements: FAO ECOCROP and USDA PLANTS, with the remaining rows from other published sources or Growable Ground compilation. Drainage: FAO ECOCROP, with the remaining rows from other published sources or Growable Ground compilation. New York soil profile from USDA NRCS SSURGO. Site-specific verification: a 30-minute soil test from your local Extension lab.
Before you plant egyptian walking onion for food
Anything you grow to eat takes up what is in the ground it grows in, so what is on record near you is worth knowing before egyptian walking onion goes in. What follows is New York’s documented federal record at state scale — a screening signal, not a soil test, and not a statement about any one lot.
Safe to Grow Here?
What the federal record shows across New York — and how to grow with it.
We checked the federal record across New York — 75,562 documented sites across 8 of the 9 source types we track.
The most significant on record: 738 Superfund sites. Sites tracked in EPA's Superfund program — from assessment-stage CERCLIS entries to confirmed National Priorities List cleanup sites.
New York carries one of the heavier federal records we track — and that's not a verdict on your yard. Proximity to a documented site is information, not a diagnosis: nothing here says any particular parcel is affected. It does earn one concrete step — before food beds go in the ground, a professional soil test tells you exactly what you're working with, and raised beds with clean imported soil grow well almost anywhere in the meantime.
Sources Checked
across New York
Severity Distribution
across New York
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around New York, CAFO runs higher than the national average — 1,029 sites across New York. Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
CAFO: CAFOs pose a different contamination profile than chemical sources.
Wash all produce consumed raw thoroughly, especially leafy greens grown near CAFOs.
Sources: EPA, USGS — 1.8M documented sites tracked nationwide across 9 federal source types.
What Else to Consider for Egyptian Walking Onion in New York
Zone compatibility tells you about winter cold survival — but New York growers also need to think about:
Short upstate growing season (100-140 frost-free days in Adirondacks)
Heavy clay soils in western NY require drainage improvement
Late spring frosts through May in higher elevations
Deer browse pressure is heavy in suburban and rural areas
Growing egyptian walking onion here specifically
Egyptian Walking Onion grows its edible bulb in the soil itself, so on any of New York's 75,562 documented contamination sites it can carry up lead you'd then eat.
Keep egyptian walking onion in raised beds of screened clean soil and confirm your parcel's lead level before the first crop. How to handle it →
What to actually do about these — and the constraints that apply to every New York grower, not just egyptian walking onion — is covered on the New York growing guide.
Timing shifts within New York
New York isn't one climate. In Hamilton County, the last hard freeze (28°F) holds until about May 19 — roughly 27 days later than the recorded state median — so plant egyptian walking onion to your county's window, not the statewide date.
Egyptian Walking Onion needs about 120 days of frost-free season to complete its cycle. Even Hamilton County — New York’s shortest season at 136 frost-free days — clears that by 16 days, so season length isn’t the constraint anywhere in New York. What varies is your own parcel.
Across New York’s 62 counties the frost-free season runs from 136 days in Hamilton County to 258 days in New York County — a spread of 122 days, which is why a single statewide planting date misleads. The median New York county sees 185 frost-free days, leaving egyptian walking onion about 65 days of slack on a typical parcel — room for a second sowing where the season runs long.
County last-freeze dates and frost-free day counts: NOAA Regional Climate Centers ACIS (1991-2020), county 28°F freeze (earlier than the folk 32°F "last frost"). Egyptian Walking Onion's 120-day requirement: USDA PLANTS / Growable Ground plant database (minimum frost-free days). A parcel report resolves your address's own frost dates.
Pollinator + Wildlife Value
Egyptian Walking Onion draws honeybees, native bees, and butterflies (moderate value, Growable Ground Plant Database). Planting it near vegetable beds can lift fruit set on neighboring crops. Outdoors, egyptian walking onion can only work that bloom inside New York's frost window — roughly 185 days, opening after the last 28°F freeze (Apr 13 - Apr 29) and closing at the first (Oct 18 - Nov 5), per NOAA Regional Climate Centers ACIS, 1991-2020.
Good to Know Before You Plant Egyptian Walking Onion
Egyptian Walking Onion is listed as toxic to dogs, cats (all) at a moderate level (ASPCA). Most listed plants only cause brief upset — a raised bed or a fenced corner usually keeps curious pets clear. Worth knowing for placement: in New York this is a one-season plant and the first hard freeze (Oct 18 - Nov 5) takes it down, so the exposure above is a summer-long one rather than something standing in the bed all year.
New York Cooperative Extension
For New York-specific cultivar recommendations, planting calendars, and pest pressure for egyptian walking onion, the canonical source is Cornell Cooperative Extension. Their fact sheets carry the local trial data we can't generalize across 50 states.
Common Questions About Growing Egyptian Walking Onion in New York
When can I plant Egyptian Walking Onion in New York?
New York's last spring hard freeze (28°F) clears between Apr 13 and Apr 29, and the first fall hard freeze lands between Oct 18 and Nov 5 (NOAA Regional Climate Centers ACIS, 1991-2020). Egyptian Walking Onion takes cold to about 23°F before a freeze kills it (FAO ECOCROP — the point where cold damages growing tissue, not a winter-survival floor), so plant on the early side of that window — even ahead of the final hard freeze.
Can Egyptian Walking Onion mature before first frost in New York?
Egyptian Walking Onion needs 240 days to mature (Growable Ground Plant Database), and even New York's longest typical season runs 206 days (NOAA Regional Climate Centers ACIS, 1991-2020) — challenging without season extension. An indoor start plus row cover on both season shoulders closes the gap.
What hardiness zone is Egyptian Walking Onion grown in across New York?
New York spans USDA hardiness zones 4a-7b (USDA ARS PHZM 2023). Egyptian Walking Onion carries a range of zones 3-9, so the overlap zones are where outdoor growing is most reliable.
How many frost-free days does a typical New York site have?
A typical New York site sees ~185 frost-free days per year (derived from NOAA Regional Climate Centers ACIS, 1991-2020). Egyptian Walking Onion needs 120+ frost-free days, so check whether your local microclimate runs above or below the state average before settling on a planting date. In cooler counties like Hamilton, the freeze-free season runs shorter than the state average, so verify your own county's window.
How should I amend the soil for Egyptian Walking Onion in New York?
Egyptian Walking Onion tolerates pH 4.5-7.5 and well (dry spells) drainage (FAO ECOCROP). That is a 3-unit span, acid ground through alkaline, so pH is rarely what limits this plant on a New York site — amend for drainage and organic matter first.
Will Egyptian Walking Onion actually grow on my specific land in New York?
State-level zone + climate data is a sketch. A Growable Ground parcel report scores egyptian walking onion against your address's exact soil pH, drainage, sun, and frost-date data drawn from USDA SSURGO, NOAA, and PRISM — not state averages.
Check your specific parcel in New York
State-level data is a sketch. Your Growable Ground report scores egyptian walking onion against your parcel's exact soil, sun, drainage, and frost data — not zone averages.
Three things about your lot that New York egyptian walking onion averages can't show:
We read public map data around New York — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the New York egyptian walking onion average
Explore More
Growing guides for egyptian walking onion
Explore New York county by county
New York carries 62 counties with their own USDA zone — a sample of the growing pages for egyptian walking onion there:
Where else egyptian walking onion grows
Egyptian Walking Onion's zone band crosses state lines — these are the states closest to New York in winter climate where it also has a page, plus the far ends of its range. Each one re-answers the question with that state's own record.
More to grow in New York
New York has a growing page for 893 plants — a rotating sample of the rest of the shelf.
Analysis by the Growable Ground research team, grounded in USDA PLANTS, USDA NRCS SSURGO, NOAA Climate Normals (1991-2020), and named Cooperative Extension sources. How we know →
Cite this dataset
Kirchick, M. (2026). Growable Ground Plant Database [Data set]. Zenodo. https://doi.org/10.5281/zenodo.21435643
Licensed CC BY-NC 4.0. DOI 10.5281/zenodo.21435643
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