Before planting it is a good idea to find your USDA Zone info to figure out 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.

In San Mateo you can determine when it's a good idea to plant red cabbage by checking out the USDA zone info.

Planting Calendar for Red cabbage

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

You can plant red cabbage quite a bit earlier in the year because they are very cold tolerant.

The earliest that you can plant red cabbage in San Mateo 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. Any later than that and your red cabbage may not have a chance to really do well. If you are starting your red cabbage indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost is on January 31 in San Mateo. In the coldest months of winter you can expect an average low temperature of 30°F.

Always keep in mind that USDA zone info for San Mateo may not be accurate from year to year and the actual date of last frost is different every year. Half of the time in San Mateo last frost occurs after January 31 so always be ready to cover your red cabbage in the event of one of those late frosts.

USDA Zone Info for San Mateo

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 San Mateo

You may be interested in your other planting guides for San Mateo.