When to plant in Mastic, NY
USDA Zone 7aMastic, New York frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
In zone 7a, Mastic supports a wide range of perennials year-round; the frost dates above are what set your annual vegetable timing.
Frost probability
SHIRLEY BROOKHAVEN AP · 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 Mastic’s own odds, recorded at SHIRLEY BROOKHAVEN AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 15 | Apr 30 | Apr 18 | Oct 4 | Oct 17 | Nov 1 |
| 32°F | May 1 | Apr 18 | Apr 4 | Oct 13 | Oct 28 | Nov 11 |
| 28°F | Apr 17 | Apr 3 | Mar 21 | Oct 24 | Nov 9 | Nov 25 |
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 Mastic, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 17 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.
Mastic planting FAQ
When is the last spring frost in Mastic, NY?
Mastic's average last spring frost falls near April 18 — the 50% mark at 32°F in the 1991–2020 normals. Hold tender transplants until the risk has passed, then plant out.
When is the first fall frost in Mastic, NY?
The first fall frost in Mastic typically arrives around October 28 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Mastic in?
Mastic is in USDA hardiness zone 7a. In zone 7a, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Mastic?
Mastic has about 193 frost-free days — a moderate growing season — between the average last spring frost (April 18) and first fall frost (October 28).
When should I plant tomatoes in Mastic?
For Mastic, sow tomatoes indoors about February 21–March 7 and move the seedlings out around April 25, after the last spring frost.
Never miss a window in Mastic
An email when it’s time to start seeds, transplant, and sow — timed to Mastic’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Shirley · 3 km
- Mastic Beach · 5 km
- Manorville · 8 km
- North Bellport · 9 km
- Ridge · 11 km
- Medford · 12 km
- East Patchogue · 12 km
- Middle Island · 13 km
Frost dates recorded at SHIRLEY BROOKHAVEN AP, 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 Mastic, NY — Frost Dates & Zone 7a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00054790. Retrieved from https://blissgarden.com/new-york/mastic.