According to the USDA Gilbert is in USDA Zone 9b. Here is some general info for USDA Zone 9b to help you get started.
| Average Date of Last Frost (spring) | February 15 |
| Average Date of First Frost (fall) | December 15 |
| Lowest Expected Low | 25°F |
| Highest Expected Low | 30°F |
This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.
You can view the USDA Zone map for Arizona here:
Below is a list of planting guides for Gilbert, AZ. These guides are based on data from Zone 9b.
Vegetables
Herbs
Flowers
