Before planting it is a good idea to find your USDA Zone info to determine 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.

By referring to the USDA zone info for Lathrop you should be able to figure out when it's possible to plant aubrieta.

Planting Calendar for Aubrieta

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

Aubrieta tend to make it in a little bit of cold which tells us that you can plant them just a bit earlier in the year than more sensitive plants.

The earliest that you can plant aubrieta in Lathrop 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 fully mature. Starting your aubrieta indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is February 15 in Lathrop. You should expect an average low temperature of 25°F in the coldest months of winter.

Since the USDA zone info for Lathrop is an average the actual date of last frost will vary from year to year. Half of the time in Lathrop you get a frost after February 15 so always be ready to cover your aubrieta if you have a surprise late frost.

USDA Zone Info for Lathrop

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Lathrop

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