The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The earliest that you can plant bok choi in Yuma can be determined by looking at the USDA zone info.

Planting Calendar for Bok Choi

Frost tolerance for bok choi:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Bok Choi are moderately cold tolerant which tells us that you can start planting them earlier than other frost tender plants.

The earliest that you can plant bok choi in Yuma is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant bok choi and expect a good harvest is probably October. If you wait any later than that and your bok choi may not have a chance to really do well. You can get started a little bit earlier by starting your bok choi indoors.

Last Frost Date

On average the last frost is on January 31 in Yuma. It might get as low as 30°F during the coldest months of winter.

Since the USDA zone info for Yuma is not always accurate the actual date of last frost can change quite a bit from year to year. Half of the time in Yuma there is a last frost after January 31 so always be ready to cover your bok choi in the event of a surprise late frost.

USDA Zone Info for Yuma

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Yuma

You may be interested in your other planting guides for Yuma.