When to Plant Arugula in New Jersey (2026 Guide)
Arugula is a fast-growing, peppery salad green that brings a vibrant flavor to your dishes. In New Jersey, it thrives in the cooler months, making proper timing essential for a successful harvest. For most regions, this means planting 4-6 weeks before the last spring frost, which varies by USDA hardiness zone.
In Zone 6a, for instance, the median last frost date falls on April 22, while Zone 7a enjoys a much earlier date of April 1. This means that New Jersey gardeners can start sowing arugula in late February to early March for an early summer harvest. With its ability to bolt in warmer temperatures, careful planning is crucial.
Arugula can also be planted for a fall harvest, typically starting around late summer. If you stagger plantings every 2-3 weeks, you can continuously enjoy fresh arugula from your garden from spring through fall — a perfect addition to any salad lover's menu.
Planting Schedule by USDA Zone in New Jersey
| Zone | Indoor start | Transplant out | Direct sow | Harvest |
|---|---|---|---|---|
| Zone 6a | Start February 15 – March 1, ~6–8 weeks before April 22 | Transplant outdoors after April 22 for outdoor sowing | Direct sow outdoors from April 15 – May 15 | Harvest from May 30 – July 15 |
| Zone 7a | Start February 1 – February 15, ~6–8 weeks before April 1 | Transplant outdoors after April 1 for outdoor sowing | Direct sow outdoors from April 15 – May 15 | Harvest from May 15 – July 15 |
| Zone 6b | Start February 15 – March 1, ~6–8 weeks before April 11 | Transplant outdoors after April 11 for outdoor sowing | Direct sow outdoors from April 15 – May 15 | Harvest from June 1 – July 20 |
Arugula Planting Windows in New Jersey
- Indoor start: For optimal growth, start arugula seeds indoors between February 15 and March 1.
- Transplant outdoors: Transplant outdoor seedlings after April 22 to ensure safety from late frosts.
- Harvest: Expect to harvest arugula from late May through mid-July, depending on your planting and zone.
Common Mistakes Growing Arugula in New Jersey
- Many New Jersey gardeners plant arugula too late, missing the optimal window for a spring harvest. With the last frost on April 22 in Zone 6a, it's crucial to seed in early March.
- Overcrowding seeds is a typical error. Arugula should be planted with adequate spacing to allow for air circulation and reduce disease risk, especially given New Jersey's humid conditions in summer.
- Ignoring pest control can hurt your harvest. Flea beetles are common in New Jersey, and if not monitored, they can leave your arugula riddled with holes. Use floating row covers to protect young plants.
- Many gardeners in New Jersey overlook the importance of successive sowings. Without staggered planting every few weeks, you risk having all your arugula mature at once, leaving you with gaps later in the season.
- Failing to properly recognize and address bolting is a common mistake. Once arugula begins to bolt, the leaves can become bitter. Keep an eye on growth and plan to harvest before flowering occurs.
Frequently Asked Questions
What if I'm in a cold pocket of New Jersey?
If you're in a colder area with microclimates, you might want to adjust your planting dates. Start seeds indoors even earlier and transplant once conditions feel stable, typically a few days after the last frost.
Can I still plant arugula in May?
May can be too late for optimal growth in warmer areas of New Jersey, especially if daytime temperatures start rising. However, you can still direct sow a late crop for a fall harvest, but anticipate variable growth.
How do I store arugula after harvest?
To store freshly harvested arugula, wrap it in a damp paper towel and place it in a plastic bag in your refrigerator. This method can keep it fresh for 5-7 days, providing for tasty salads throughout the week.
Is arugula heat tolerant?
Arugula does not handle heat well and tends to bolt when temperatures exceed 75°F. If you notice your plants starting to flower, it’s best to harvest immediately to avoid bitter leaves.
Can I grow arugula in containers?
Yes, arugula is suitable for container gardening, thriving in pots that are at least 6 inches deep. Just ensure the containers have good drainage and a rich potting mix for best results.
Keep Learning
City guides in New Jersey
Other crops in New Jersey
Typical fall sowing window for Arugula in New Jersey: August 29 – September 19.