One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You should be able to estimate when it's possible to plant chinese cabbage by checking out the USDA zone info for Walla Walla.

Planting Calendar for Chinese cabbage

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

Chinese cabbage do well in moderate cold which means that you can plant them earlier than plants that are more sensitive to the cold.

The earliest that you can plant chinese cabbage in Walla Walla is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant chinese cabbage and expect a good harvest is probably September. Any later than that and your chinese cabbage may not have a chance to really do well. Starting your chinese cabbage indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

In Walla Walla the average date of last frost happens on April 15. You can expect an average low temperature of 0°F in the coldest months of winter.

It's important to remember that USDA zone info for Walla Walla is an average and the actual date of last frost changes from year to year. Since half of the time in Walla Walla it frosts late in the year after April 15 be ready to protect your chinese cabbage if you have a surprise late frost.

USDA Zone Info for Walla Walla

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Walla Walla

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