According to the USDA Las Vegas is in USDA Zone 9a. Here is some general info for USDA Zone 9a to help you get started.
| Average Date of Last Frost (spring) | February 15 |
| Average Date of First Frost (fall) | December 15 |
| Lowest Expected Low | 20°F |
| Highest Expected Low | 25°F |
This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.
You can view the USDA Zone map for Nevada here:
Below is a list of planting guides for Las Vegas, NV. These guides are based on data from Zone 9a.
Vegetables
Herbs
Flowers
