One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A way of getting a good idea when it's the best time to plant arabis is to refer to the USDA zone info for San Pablo.

Planting Calendar for Arabis

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

Arabis do ok in quite a bit of cold which tells us that you can plant them much earlier in the year than other plants that might not handle the cold.

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

Last Frost Date

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

Keep in mind that USDA zone info for San Pablo may not be accurate from year to year and the actual date of last frost will vary from year to year. Since half of the time in San Pablo last frost occurs after January 31 be ready to cover your arabis if you have a late frost.

USDA Zone Info for San Pablo

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 Pablo

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