Newark, NJ Frost Dates
Average frost dates, USDA hardiness zone, and growing season length for Newark, New Jersey.
Gardening in Newark
New Jersey's largest city has a growing urban agriculture movement that's transforming vacant lots and rooftops into productive food sources across the Ironbound, North Ward, and South Ward.
The urban heat island effect makes Newark warmer than suburban New Jersey — effectively pushing you half a zone warmer. Your 203-day growing season benefits from this urban warmth. Port Newark's proximity brings maritime humidity.
The Ironbound's Portuguese and Brazilian communities grow food traditions from the Iberian Peninsula and South America alongside longtime Italian and African American neighborhood gardens. Newark's urban farming renaissance is creating food access in communities that need it most.
What This Means for Newark Gardeners
The average last spring frost in Newark is around April 5, and the average first fall frost arrives around October 25. That gives you approximately 203 frost-free days to work with.
That's a generous season. You have time for full-size tomatoes, long-season peppers, and even watermelons without the anxiety of racing the frost. Start warm-season seeds indoors 6-8 weeks before your last frost to hit the ground running. Fall planting is your second opportunity — garlic, kale, lettuce, and broccoli all go in 8-10 weeks before your first frost for harvest into late autumn.
These dates are based on NOAA 30-year Climate Normal data for the Newark area. Your actual frost dates could shift 2-3 weeks in either direction in any given year. Learn more about our data sources.
What to Grow in Newark
Newark's 203-day growing season is generous — long enough for two full growing windows (spring and fall) with warm-season crops between them. You can grow the full range of vegetables, herbs, and flowers with proper timing. Focus on heat-tolerant varieties for midsummer and cool-season crops for extended fall harvests. Recommended starting points: tomatoes, peppers, beans, cucumbers, squash, garlic, kale, and sunflowers.
See the full New Jersey planting guide for all 40 plants: New Jersey Planting Calendar. Or enter your zip code for exact planting dates personalized to Newark.
More About Zone 7A
Newark is in USDA Hardiness Zone 7A, which means average annual extreme minimum temperatures between 0°F to 5°F. View the full Zone 7A planting guide.
See the complete planting calendar for New Jersey: New Jersey Planting Calendar.
Other Cities in New Jersey
Frequently Asked Questions
These dates are based on NOAA's 30-year Climate Normal data for the Newark area. They represent historical averages, not predictions. In any given year, the actual last frost could be 2-3 weeks earlier or later. Microclimates within Newark (urban heat islands, hilltops, low-lying valleys) can also shift your local frost dates by a week or more.
Cool-season crops go in 3-4 weeks before your last frost (April 5). Warm-season crops wait until 2 weeks after. You have time for a fall round too — plant cool-season crops again in late summer for harvest into autumn. Enter your zip code for exact dates.