When to plant in New Mexico
New Mexico spans USDA hardiness zones 4b-9a. Average last spring frost: mid April (south) / late May (mountains). Average first fall frost: late October (south) / mid September (mountains). This calendar is anchored to NMSU Cooperative Extension Service's recommendations, with timing adjusted for the dominant climate zone of the state.
New Mexico at a glance
| USDA hardiness zones | 4b-9a |
| Region | Desert Southwest |
| Average last spring frost | mid April (south) / late May (mountains) |
| Average first fall frost | late October (south) / mid September (mountains) |
| Primary Extension service | NMSU Cooperative Extension Service |
What grows particularly well in New Mexico
These are the crops, ornamentals, and trees NMSU Cooperative Extension Service highlights as well-suited to New Mexico's climate:
- chile
- pinto bean
- blue grama
- penstemon
- desert willow
- apricot
New Mexico planting calendar
Dates are approximate and based on the dominant USDA zone for the state. For zone-specific timing, use the zone finder by ZIP code and frost date lookup tools.
Spring planting (after last frost: mid April (south) / late May (mountains))
Cool-season vegetables (start 2-6 weeks before last frost outdoors): lettuce, spinach, peas, radishes, carrots, beets, kale, broccoli transplants, cabbage transplants.
Warm-season vegetables (after last frost, soil 60F+): tomato transplants, pepper transplants, beans (direct sow), cucumbers, squash, melons. See the seed starting timeline tool for indoor start dates.
Annual flowers (after last frost): zinnia, marigold, cosmos, sunflower, nasturtium.
Perennials, shrubs, trees: Plant in spring after soil thaws but before summer heat. Best window in New Mexico: 4-6 weeks after last frost.
Summer (June - August)
Maintenance season for most New Mexico gardens. Mulch heavily, water deeply (1 inch per week), pinch back mums for fall bloom, hand-pull weeds, harvest summer vegetables. Plant fall vegetable starts indoors by mid-July.
Fall planting (before first frost: late October (south) / mid September (mountains))
Cool-season vegetables (6-8 weeks before first frost): lettuce, spinach, radish, kale, broccoli, cabbage transplants. Per Penn State Extension, fall vegetable production can equal or exceed spring production with proper timing.
Spring-flowering bulbs: tulip, daffodil, allium, crocus, hyacinth. Plant 4-6 weeks before ground freezes. In New Mexico: typically October-November.
Perennials, shrubs, trees: Fall is the best planting season for woody plants in most of New Mexico - cooler temperatures + autumn rains reduce transplant stress. Plant 6+ weeks before first hard freeze.
Garlic: Plant cloves in October-November. Harvest the following July.
Winter (December - February)
Most of New Mexico is in dormancy. Tasks: order seeds, plan next year, dormant prune fruit trees (February), order bare-root plants for spring delivery. Avoid foot traffic on frozen lawns.
Common New Mexico challenges
Drought; alkaline soil; intense UV at altitude; cold winters in north; salt accumulation in irrigated soils; wildfire risk. For region-specific guidance, see our Desert Southwest regional gardening guide.
Where to get New Mexico-specific advice
The most reliable source for local growing advice is your county Extension office. NMSU Cooperative Extension Service has county offices that provide free soil testing, plant disease diagnosis, and growing recommendations specific to your microclimate.
Visit NMSU Cooperative Extension Service for the office nearest you.
Related tools and guides
- Find your USDA zone by ZIP code
- Look up your average frost dates
- Seasonal care calendar by zone
- Seed starting timeline calculator
- Desert Southwest regional gardening guide