Generally — Most Areas
rakkyo (zones 5-10) partially overlaps with New York (3b-7b). It can grow in zones 5-7 within the state.
Your yard isn't the whole zone.
New York spans zones 3b-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 rakkyo against your land's actual soil, sun, and frost.
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Zone Comparison
Rakkyo Needs
- USDA Zones: 5-10
- Soil pH: 4.3 - 7.2
- Sun: Full Sun
- Drainage: well (dry spells)
- Frost-Free Days: 45+
New York Has
- USDA Zones: 3b-7b
- Last Frost: Apr 1 - May 30
- First Frost: Sep 15 - Nov 1
- Annual Rainfall: 30-50 inches
- Common Soils: Glacial till, Silt loam, Clay loam
Plant Zone Range (zones 5-10)
Preferred Soil pH
Plant data: USDA PLANTS Database / plant_species_v5.csv. State data: USDA ARS PHZM 2023, NOAA Climate Normals, NRCS SSURGO.
When to Plant Rakkyo in New York
The frost window
Across New York, the last spring frost clears between Apr 1 and May 30, and the first fall frost lands between Sep 15 and Nov 1 (NOAA Climate Normals 1991-2020). Counting from the latest last frost to the earliest first frost, that's a 108-day window you can count on — up to 214 days on a mild site in a kind year.
Frost tenderness
Rakkyo is frost-tender — its listed minimum temperature is 46.4°F (USDA PLANTS Database) — so set plants out after the last frost has cleared your local site, not the state's earliest date.
Days to maturity vs. the window
At 150 days to maturity (USDA PLANTS Database), the fit is tight: New York's dependable window runs 108 days. Starting seeds indoors and transplanting at the front of the window banks the difference.
Frost window: NOAA Climate Normals 1991-2020. Plant timing fields: USDA PLANTS Database. Your site's own frost dates can run earlier or later than the state range — a parcel report pins them down.
Growing Season Fit
Zone compatibility says you can survive winter here. Whether the growing season is long enough — and warm enough — is a different question.
Frost-free days
Rakkyo wants 45+ frost-free days; a typical New York site sees ~170 (NOAA Climate Normals). That leaves comfortable headroom for succession planting.
Growing degree days
Rakkyo needs ~1400 GDD (base 50°F) to ripen. The state median runs ~2900 GDD (USDA NRCS county aggregates), so New York's typical season clears that easily.
Climate aggregates derive from USDA NRCS county-level hardiness data + Cornell CALS Extension GDD-by-region tables + MSU Extension chill-hours-by-zone (1991-2020 NOAA Climate Normals baseline).
Soil + Drainage Fit
Rakkyo likes near-neutral soil (pH 4.3-7.2). That's the common-ground band across New York's glacial till and silt loam — a soil test confirms it for your site. 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.
Plant pH and drainage requirements from USDA PLANTS Database. New York soil profile from USDA NRCS SSURGO. Site-specific verification: a 30-minute soil test from your local Extension lab.
Rakkyo in New York — Quick Answer
- Verdict: Generally — Most Areas
- Plant Zones: 5-10 (USDA PLANTS Database)
- State Zones: 3b-7b (USDA ARS PHZM 2023)
- Growing Season: Apr 1 - May 30 to Sep 15 - Nov 1 (NOAA Climate Normals)
- Days to Maturity: 150 days
What Else to Consider
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)
Fast varieties plus season extension: a low tunnel or cold frame reliably buys back the missing weeks.
Heavy clay soils in western NY require drainage improvement
A raised bed solves the drainage the first season; long-term, steady compost works that clay into excellent loam.
Late spring frosts through May in higher elevations
Plant to your elevation's real frost dates, not the valley's — two weeks of patience saves a full replanting.
Deer browse pressure is heavy in suburban and rural areas
Fencing is the control that works; behind it, aromatic herbs, ferns, and daffodils are the plants deer tend to pass by.
Pollinator + Wildlife Value
Rakkyo draws pollinators (moderate value, USDA PLANTS Database). Planting it near vegetable beds can lift fruit set on neighboring crops.
New York Cooperative Extension
For New York-specific cultivar recommendations, planting calendars, and pest pressure for rakkyo, 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 Rakkyo in New York
When can I plant Rakkyo in New York?
New York's last spring frost clears between Apr 1 and May 30, and the first fall frost lands between Sep 15 and Nov 1 (NOAA Climate Normals 1991-2020). Rakkyo is frost-tender — its listed minimum temperature is 46.4°F (USDA PLANTS Database) — so wait until the last frost has cleared your specific site before planting out.
Can Rakkyo mature before first frost in New York?
It's close: Rakkyo needs 150 days to mature (USDA PLANTS Database) against New York's 108-day dependable window (NOAA Climate Normals 1991-2020). Start seeds indoors and transplant right after last frost to bank the missing days.
What hardiness zone is Rakkyo grown in across New York?
New York spans USDA hardiness zones 3b-7b (USDA ARS PHZM 2023). Rakkyo carries a range of zones 5-10, 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 ~170 frost-free days per year (derived from NOAA Climate Normals 1991-2020). Rakkyo needs 45+ frost-free days, so check whether your local microclimate runs above or below the state average before settling on a planting date.
How should I amend the soil for Rakkyo in New York?
Rakkyo prefers pH 4.3-7.2 and well (dry spells) drainage (USDA PLANTS Database). That sits in the common-ground band across New York soils — a 30-minute soil test from a local Extension lab confirms it for your specific site.
Will Rakkyo actually grow on my specific land in New York?
State-level zone + climate data is a sketch. A Growable Ground parcel report scores rakkyo 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 rakkyo against your parcel's exact soil, sun, drainage, and frost data — not zone averages.
Three things about your exact spot that zone averages miss:
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
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