According to the USDA Maricopa is in USDA Zone 7b. Here is some general info for USDA Zone 7b to help you get started.
Average Date of Last Frost (spring) | April 15 |
Average Date of First Frost (fall) | October 15 |
Lowest Expected Low | 5°F |
Highest Expected Low | 10°F |
This means that on a really cold year, the coldest it will get is 5°F. On most years you should be prepared to experience lows near 10°F.
You can view the USDA Zone map for Arizona here:
Below is a list of planting guides for Maricopa, AZ. These guides are based on data from Zone 7b.
Vegetables
Herbs
Flowers