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 Bruno you can determine when you can plant ajuga by looking at the USDA zone info.

Planting Calendar for Ajuga

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

Ajuga are very cold tolerant which tells us that you can start planting them much earlier than other plants that might not handle the cold.

The earliest that you can plant ajuga in San Bruno 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 ajuga and expect a good harvest is probably October. If you wait any later than that and your ajuga may not have a chance to grow to maturity. Starting your ajuga indoors is a great way to get them started a few weeks earlier.

Last Frost Date

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

Always keep in mind that the actual date of last frost is an average because it is based on the USDA zone info for San Bruno and it will vary from year to year. Half of the time in San Bruno there is a last frost after January 31 so make sure that you are prepared to protect your ajuga in the event of a late frost.

USDA Zone Info for San Bruno

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 Bruno

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