When to plant in Greenlawn, NY
USDA Zone 7bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Greenlawn, New York — all computed from Greenlawn's nearest NOAA weather station.
In zone 7b, Greenlawn supports a wide range of perennials year-round; the frost dates above are what set your annual vegetable timing.
Frost probability
CENTERPORT · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Greenlawn’s own odds, recorded at CENTERPORT.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 7 | Apr 22 | Apr 9 | Oct 17 | Oct 31 | Nov 12 |
| 32°F | Apr 23 | Apr 9 | Mar 30 | Oct 30 | Nov 10 | Nov 26 |
| 28°F | Apr 10 | Mar 30 | Mar 16 | Nov 6 | Nov 21 | Dec 7 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Full-year planting calendar
Each bar is the exact window to take a planting action in Greenlawn, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 24 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Greenlawn planting FAQ
When is the last spring frost in Greenlawn, NY?
Plan for the last spring frost in Greenlawn around April 9 (the date it has a 50% chance of a 32°F freeze). Anything frost-sensitive should go out after it.
When is the first fall frost in Greenlawn, NY?
The first fall frost in Greenlawn typically arrives around November 10 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Greenlawn in?
Greenlawn is in USDA hardiness zone 7b. In zone 7b, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Greenlawn?
Greenlawn has about 215 frost-free days — a long growing season — between the average last spring frost (April 9) and first fall frost (November 10).
When should I plant tomatoes in Greenlawn?
For Greenlawn, sow tomatoes indoors about February 12–February 26 and move the seedlings out around April 16, after the last spring frost.
Never miss a window in Greenlawn
An email when it’s time to start seeds, transplant, and sow — timed to Greenlawn’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Elwood · 3 km
- Huntington · 4 km
- Huntington Station · 4 km
- East Northport · 4 km
- Dix Hills · 7 km
- Commack · 7 km
- Fort Salonga · 8 km
- Melville · 10 km
Frost dates recorded at CENTERPORT, 2 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Greenlawn, NY — Frost Dates & Zone 7b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00301309. Retrieved from https://blissgarden.com/new-york/greenlawn.