When to plant in Selden, NY
USDA Zone 7bEverything below — frost dates, hardiness zone, and what to plant when in Selden, New York — is derived from the closest NOAA station with complete climate normals.
In zone 7b, Selden supports a wide range of perennials year-round; the frost dates above are what set your annual vegetable timing.
Frost probability
MT SINAI · 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 Selden’s own odds, recorded at MT SINAI.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 7 | Apr 20 | Apr 6 | Oct 10 | Oct 26 | Nov 10 |
| 32°F | Apr 19 | Apr 4 | Mar 23 | Oct 20 | Nov 7 | Nov 24 |
| 28°F | Apr 7 | Mar 27 | Mar 11 | Nov 2 | Nov 22 | Dec 9 |
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 Selden, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 11 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.
Selden planting FAQ
When is the last spring frost in Selden, NY?
On average, the last spring frost in Selden is around April 4 (50% probability at 32°F, from 1991–2020 NOAA normals). Wait until after this date to set out tender plants like tomatoes and peppers.
When is the first fall frost in Selden, NY?
In Selden, the first 32°F freeze of fall lands around November 7 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Selden in?
Selden 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 Selden?
Selden has about 217 frost-free days — a long growing season — between the average last spring frost (April 4) and first fall frost (November 7).
When should I plant tomatoes in Selden?
For Selden, sow tomatoes indoors about February 7–February 21 and move the seedlings out around April 11, after the last spring frost.
Never miss a window in Selden
An email when it’s time to start seeds, transplant, and sow — timed to Selden’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Centereach · 3 km
- Coram · 4 km
- Farmingville · 4 km
- Terryville · 4 km
- Lake Grove · 6 km
- Holtsville · 7 km
- East Setauket · 7 km
- Lake Ronkonkoma · 7 km
Frost dates recorded at MT SINAI, 7 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 Selden, NY — Frost Dates & Zone 7b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00305606. Retrieved from https://blissgarden.com/new-york/selden.