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.

The USDA zone info for Portola Valley should be reviewed to estimate when to plant savoy cabbage.

Planting Calendar for Savoy cabbage

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

Savoy cabbage can survive in cold weather which tells us that you can plant them much earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant savoy cabbage in Portola Valley 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 savoy cabbage and expect a good harvest is probably October. Any later than that and your savoy cabbage may not have a chance to grow to maturity. You can get started a little bit earlier by starting your savoy cabbage indoors.

Last Frost Date

The average date of last frost is January 31 in Portola Valley. It might get as low as 30°F during the coldest months of winter.

Keep in mind that USDA zone info for Portola Valley is not always accurate and the actual date of last frost changes from year to year. Half of the time in Portola Valley last frost occurs after January 31 so make sure that you are prepared to protect your savoy cabbage if you have a late frost.

USDA Zone Info for Portola Valley

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 Portola Valley

You may be interested in your other planting guides for Portola Valley.