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.

In Sebastopol you can figure out when it's a good idea to plant sorrel by referring to the USDA zone info.

Planting Calendar for Sorrel

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

Sorrel are moderately cold tolerant which tells us that you can plant them a little bit earlier than more sensitive plants.

The earliest that you can plant sorrel in Sebastopol 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 sorrel and expect a good harvest is probably October. Any later than that and your sorrel may not have a chance to really do well. You can get started a couple of weeks earlier by starting your sorrel indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Sebastopol. In the coldest months of winter you can expect an average low temperature of 20°F.

Since the USDA zone info for Sebastopol may not be accurate from year to year the actual date of last frost is different every year. Since half of the time in Sebastopol last frost occurs after February 15 be ready to cover your sorrel if you have a surprise late frost.

USDA Zone Info for Sebastopol

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Sebastopol

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