Jacksonville, NC Frost Dates
Average frost dates, USDA hardiness zone, and growing season length for Jacksonville, North Carolina.
Gardening in Jacksonville
Camp Lejeune's adjoining city has a diverse military community that brings gardening traditions from every climate zone to the coastal Carolina lowlands.
Zone 8a with 237 frost-free days. The coastal plain's sandy soil drains well. Maritime moderation provides a long, mild growing season. The White Oak River corridor adds fertility.
Marine families cycle through, creating a constantly refreshing mix of gardening knowledge from around the world.
What This Means for Jacksonville Gardeners
The average last spring frost in Jacksonville is around March 18, and the average first fall frost arrives around November 10. That gives you approximately 237 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 Jacksonville 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 Jacksonville
Jacksonville's 237-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 North Carolina planting guide for all 40 plants: North Carolina Planting Calendar. Or enter your zip code for exact planting dates personalized to Jacksonville.
More About Zone 8A
Jacksonville is in USDA Hardiness Zone 8A, which means average annual extreme minimum temperatures between 10°F to 15°F. View the full Zone 8A planting guide.
See the complete planting calendar for North Carolina: North Carolina Planting Calendar.
Other Cities in North Carolina
Frequently Asked Questions
These dates are based on NOAA's 30-year Climate Normal data for the Jacksonville 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 Jacksonville (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 (March 18). 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.