When to plant in Perth Amboy, NJ
USDA Zone 7bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Perth Amboy, New Jersey — all computed from Perth Amboy's nearest NOAA weather station.
In zone 7b, Perth Amboy supports a wide range of perennials year-round; the frost dates above are what set your annual vegetable timing.
Frost probability
NEW BRUNSWICK 3 SE · 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 Perth Amboy’s own odds, recorded at NEW BRUNSWICK 3 SE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 14 | Apr 29 | Apr 14 | Oct 3 | Oct 14 | Oct 30 |
| 32°F | May 1 | Apr 15 | Apr 2 | Oct 11 | Oct 26 | Nov 8 |
| 28°F | Apr 17 | Apr 2 | Mar 18 | Oct 23 | Nov 7 | Nov 23 |
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 Perth Amboy, 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.
Perth Amboy planting FAQ
When is the last spring frost in Perth Amboy, NJ?
Perth Amboy's average last spring frost falls near April 15 — 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 Perth Amboy, NJ?
In Perth Amboy, the first 32°F freeze of fall lands around October 26 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Perth Amboy in?
Perth Amboy 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 Perth Amboy?
Perth Amboy has about 194 frost-free days — a moderate growing season — between the average last spring frost (April 15) and first fall frost (October 26).
When should I plant tomatoes in Perth Amboy?
For Perth Amboy, sow tomatoes indoors about February 18–March 4 and move the seedlings out around April 22, after the last spring frost.
Never miss a window in Perth Amboy
An email when it’s time to start seeds, transplant, and sow — timed to Perth Amboy’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Woodbridge · 4 km
- Fords · 4 km
- Iselin · 7 km
- Avenel · 7 km
- Sayreville · 7 km
- Carteret · 8 km
- Metuchen · 8 km
- Colonia · 8 km
Frost dates recorded at NEW BRUNSWICK 3 SE, 14 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 Perth Amboy, NJ — Frost Dates & Zone 7b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00286055. Retrieved from https://blissgarden.com/new-jersey/perth-amboy.