Dallas, TX Frost Dates
Average frost dates, USDA hardiness zone, and growing season length for Dallas, Texas.
Gardening in Dallas
Dallas gardening runs hot, fast, and big — like everything else in the city. The Blackland Prairie soil that underlies the metroplex is some of the richest in Texas, but it cracks when it's dry, floods when it's wet, and challenges every plant that doesn't have deep roots and a stubborn streak.
North Texas weather is famously volatile — 80°F on Monday, ice storm on Wednesday, 75°F on Friday. This whiplash challenges gardeners but also creates surprising opportunities: your long fall (last frost isn't until March 10) means cool-season crops produce for months. Summer heat above 100°F is routine, shutting down most vegetables from July through August. Smart Dallas gardeners plan for two growing seasons with a summer siesta in between.
Cowboys fans believe in big, ambitious plans — Dallas gardeners share the DNA. The city's urban farming movement has transformed South Dallas neighborhoods, and the Dallas Farmers Market is one of the oldest in the state. North Texas Master Gardeners are legendarily generous with advice, which is good because that Blackland Prairie clay humbles everyone eventually.
What This Means for Dallas Gardeners
The average last spring frost in Dallas is around March 10, and the average first fall frost arrives around November 15. That gives you approximately 250 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 Dallas 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 Dallas
Dallas's 250-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 Texas planting guide for all 40 plants: Texas Planting Calendar. Or enter your zip code for exact planting dates personalized to Dallas.
More About Zone 8A
Dallas 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 Texas: Texas Planting Calendar.
Other Cities in Texas
Frequently Asked Questions
These dates are based on NOAA's 30-year Climate Normal data for the Dallas 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 Dallas (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 10). 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.