Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The best time to plant napa cabbage in Imperial Beach can be figured out by referring to the USDA zone info.

Planting Calendar for Napa cabbage

Frost tolerance for napa cabbage:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Since napa cabbage are very cold tolerant you can plant them quite a bit earlier in the year than more sensitive plants.

The earliest that you can plant napa cabbage in Imperial Beach 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 napa cabbage and expect a good harvest is probably October. If you wait any later than that and your napa cabbage may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your napa cabbage indoors.

Last Frost Date

In Imperial Beach the average date of last frost happens on January 31. In the coldest months of winter you should expect an average low temperature of 35°F.

Since the USDA zone info for Imperial Beach may not be accurate from year to year the actual date of last frost will vary from year to year. Half of the time in Imperial Beach there is a last frost after January 31 so be sure to be ready to cover your napa cabbage in the event of a surprise late frost.

USDA Zone Info for Imperial Beach

Here is the info for USDA Zone 10b.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	35°F
Highest Expected Low	40°F

This means that on a really cold year, the coldest it will get is 35°F. On most years you should be prepared to experience lows near 40°F.

Plants to Grow in Imperial Beach

You may be interested in your other planting guides for Imperial Beach.