Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Signal Hill you can figure out when it's the best time to plant aubrieta by reviewing the USDA zone info.

Planting Calendar for Aubrieta

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

Aubrieta do ok in some cold which tells us that you can plant them a little bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant aubrieta in Signal Hill 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 aubrieta and expect a good harvest is probably October. Any later than that and your aubrieta may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your aubrieta indoors.

Last Frost Date

On average the last frost has passed is on January 31 in Signal Hill. In the coldest months of winter you should expect an average low temperature of 35°F.

Since the USDA zone info for Signal Hill is just an average the actual date of last frost will vary from year to year. Half of the time in Signal Hill you get surprised by a frost after January 31 so just be sure to be ready to cover your aubrieta if you have a surprise late frost.

USDA Zone Info for Signal Hill

Here is the info for USDA Zone 10b.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	35°F
Highest Expected Low	40°F

This means that on a really cold year, the coldest it will get is 35°F. On most years you should be prepared to experience lows near 40°F.

Plants to Grow in Signal Hill

You may be interested in your other planting guides for Signal Hill.