When to plant in Glassboro, NJ
USDA Zone 7bEverything below — frost dates, hardiness zone, and what to plant when in Glassboro, New Jersey — is derived from the closest NOAA station with complete climate normals.
In zone 7b, Glassboro supports a wide range of perennials year-round; the frost dates above are what set your annual vegetable timing.
The average last spring frost in Glassboro is now 9 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
GLASSBORO 2 NE · 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 Glassboro’s own odds, recorded at GLASSBORO 2 NE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 4 | Apr 22 | Apr 8 | Oct 9 | Oct 21 | Nov 2 |
| 32°F | Apr 22 | Apr 8 | Mar 27 | Oct 18 | Nov 1 | Nov 15 |
| 28°F | Apr 9 | Mar 27 | Mar 12 | Oct 30 | Nov 11 | Nov 29 |
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 Glassboro, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 21 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.
Glassboro planting FAQ
When is the last spring frost in Glassboro, NJ?
On average, the last spring frost in Glassboro is around April 8 (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 Glassboro, NJ?
The first fall frost in Glassboro typically arrives around November 1 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Glassboro in?
Glassboro 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 Glassboro?
Glassboro has about 207 frost-free days — a moderate growing season — between the average last spring frost (April 8) and first fall frost (November 1).
When should I plant tomatoes in Glassboro?
For Glassboro, sow tomatoes indoors about February 11–February 25 and move the seedlings out around April 15, after the last spring frost.
Never miss a window in Glassboro
An email when it’s time to start seeds, transplant, and sow — timed to Glassboro’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Sicklerville · 11 km
- Williamstown · 12 km
- Pine Hill · 15 km
- Woodbury · 16 km
- Lindenwold · 17 km
- Bellmawr · 19 km
- Echelon · 19 km
- Gloucester City · 21 km
Frost dates recorded at GLASSBORO 2 NE, 4 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 Glassboro, NJ — Frost Dates & Zone 7b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00283291. Retrieved from https://blissgarden.com/new-jersey/glassboro.