According to the USDA Las Cruces is in USDA Zone 8a. Here is some general info for USDA Zone 8a to help you get started.
Average Date of Last Frost (spring) | March 15 |
Average Date of First Frost (fall) | November 15 |
Lowest Expected Low | 10°F |
Highest Expected Low | 15°F |
This means that on a really cold year, the coldest it will get is 10°F. On most years you should be prepared to experience lows near 15°F.
You can view the USDA Zone map for New Mexico here:
Below is a list of planting guides for Las Cruces, NM. These guides are based on data from Zone 8a.
Vegetables
Herbs
Flowers