Roswell, NM Frost Dates
Average frost dates, USDA hardiness zone, and growing season length for Roswell, New Mexico.
Gardening in Roswell
Roswell's UFO fame overshadows a Pecos Valley agricultural heritage that's been growing food since the Mescalero Apache irrigated from the Pecos River.
Zone 7a with 203 frost-free days. The Pecos Valley provides irrigation and fertile bottomland. High desert sun and cool nights produce flavorful crops.
The visitors come for aliens; they stay for the chile. Roswell's food garden culture draws on the Pecos Valley's long agricultural heritage.
What This Means for Roswell Gardeners
The average last spring frost in Roswell 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 Roswell 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 Roswell
Roswell'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 Mexico planting guide for all 40 plants: New Mexico Planting Calendar. Or enter your zip code for exact planting dates personalized to Roswell.
More About Zone 7A
Roswell 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 Mexico: New Mexico Planting Calendar.
Other Cities in New Mexico
Frequently Asked Questions
These dates are based on NOAA's 30-year Climate Normal data for the Roswell 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 Roswell (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.