When to plant in Oak Ridge, NJ
USDA Zone 6bEverything below — frost dates, hardiness zone, and what to plant when in Oak Ridge, New Jersey — is derived from the closest NOAA station with complete climate normals.
Zone 6b means Oak Ridge sees real winter cold, but a good range of perennials survive; the frost dates above govern when annual vegetables go out.
Frost probability
CHARLOTTEBURG RSVR · 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 Oak Ridge’s own odds, recorded at CHARLOTTEBURG RSVR.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 24 | May 8 | Apr 23 | Sep 25 | Oct 7 | Oct 21 |
| 32°F | May 11 | Apr 25 | Apr 12 | Oct 2 | Oct 17 | Nov 3 |
| 28°F | Apr 26 | Apr 11 | Mar 30 | Oct 14 | Oct 31 | Nov 15 |
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 Oak Ridge, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 18 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.
Oak Ridge planting FAQ
When is the last spring frost in Oak Ridge, NJ?
Plan for the last spring frost in Oak Ridge around April 25 (the date it has a 50% chance of a 32°F freeze). Anything frost-sensitive should go out after it.
When is the first fall frost in Oak Ridge, NJ?
Expect Oak Ridge's first fall frost near October 17 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Oak Ridge in?
Oak Ridge is in USDA hardiness zone 6b. In zone 6b, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Oak Ridge?
There are roughly 175 frost-free days in Oak Ridge (a moderate growing season), running from the average last frost around April 25 to the first fall frost near October 17.
When should I plant tomatoes in Oak Ridge?
In Oak Ridge, start tomato seeds indoors around February 28–March 14, then transplant seedlings outdoors around May 2 once the danger of frost has passed.
Never miss a window in Oak Ridge
An email when it’s time to start seeds, transplant, and sow — timed to Oak Ridge’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Kinnelon · 11 km
- Lake Hopatcong · 12 km
- Hopatcong · 16 km
- Dover · 17 km
- Pompton Plains · 18 km
- Wanaque · 18 km
- Pompton Lakes · 18 km
- Lake Hiawatha · 19 km
Frost dates recorded at CHARLOTTEBURG RSVR, 6 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 Oak Ridge, NJ — Frost Dates & Zone 6b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00281582. Retrieved from https://blissgarden.com/new-jersey/oak-ridge.