According to the USDA Alva is in USDA Zone 6b. Here is some general info for USDA Zone 6b 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 | 0°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 0°F.
You can view the USDA Zone map for Oklahoma here:
Below is a list of planting guides for Alva, OK. These guides are based on data from Zone 6b.
Vegetables
Herbs
Flowers
