Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By referring to the USDA zone info for Irvine you should be able to determine when to plant red cabbage.

Planting Calendar for Red cabbage

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

Red cabbage tend to make it in a bit of cold which tells us that you can plant them a lot earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant red cabbage in Irvine 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 red cabbage and expect a good harvest is probably October. If you wait any later than that and your red cabbage may not have a chance to fully mature. If you are starting your red cabbage indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

In Irvine the average date of last frost happens on January 31. In the coldest months of winter you can expect an average low temperature of 30°F.

Remember that USDA zone info for Irvine is an average and the actual date of last frost is different every year. Since half of the time in Irvine you get a frost after January 31 be ready to protect your red cabbage in the event of one of those late frosts.

USDA Zone Info for Irvine

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 Irvine

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