When to plant in Haddonfield, NJ
USDA Zone 7bEverything below — frost dates, hardiness zone, and what to plant when in Haddonfield, New Jersey — is derived from the closest NOAA station with complete climate normals.
Zone 7b means many perennials and even some tender shrubs overwinter in Haddonfield, while your frost dates still decide when annuals go out.
Frost probability
PENNSAUKEN 1N · 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 Haddonfield’s own odds, recorded at PENNSAUKEN 1N.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 15 | Apr 27 | Apr 14 | Oct 6 | Oct 19 | Nov 1 |
| 32°F | May 1 | Apr 15 | Apr 1 | Oct 16 | Oct 31 | Nov 12 |
| 28°F | Apr 14 | Apr 1 | Mar 17 | Oct 31 | Nov 10 | Nov 24 |
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 Haddonfield, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 14 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.
Haddonfield planting FAQ
When is the last spring frost in Haddonfield, NJ?
Haddonfield'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 Haddonfield, NJ?
The first fall frost in Haddonfield typically arrives around October 31 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Haddonfield in?
Haddonfield 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 Haddonfield?
There are roughly 199 frost-free days in Haddonfield (a moderate growing season), running from the average last frost around April 15 to the first fall frost near October 31.
When should I plant tomatoes in Haddonfield?
In Haddonfield, start tomato seeds indoors around February 18–March 4, then transplant seedlings outdoors around April 22 once the danger of frost has passed.
Never miss a window in Haddonfield
An email when it’s time to start seeds, transplant, and sow — timed to Haddonfield’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Westmont · 2 km
- Collingswood · 4 km
- Cherry Hill Mall · 5 km
- Springdale · 6 km
- Bellmawr · 6 km
- Greentree · 6 km
- Echelon · 6 km
- Gloucester City · 7 km
Frost dates recorded at PENNSAUKEN 1N, 8 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 Haddonfield, NJ — Frost Dates & Zone 7b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00286864. Retrieved from https://blissgarden.com/new-jersey/haddonfield.