When can I plant Aubrieta in Zone 9b

The USDA Zone info is a great tool for gardeners to help us determine our gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for our area.

A way of figuring out when it's possible to plant aubrieta is to look at the USDA zone info for Zone 9b.


Planting Calendar for Aubrieta

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

You can plant aubrieta a little bit earlier in the year because they are moderately cold tolerant.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant aubrieta
Possibly ok, but a risky time to plant aubrieta
Probably not a good time to plant aubrieta

The earliest that you can plant aubrieta in Zone 9b 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. You probably don't want to wait any later than that or else your aubrieta may not have a chance to grow to maturity. Starting your aubrieta indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

On average all chance of frost has passed is on February 15 in Zone 9b. We should expect an average low temperature of 25°F in the coldest months of winter.

Remember that USDA zone info for Zone 9b may not be accurate from year to year and our actual date of last frost is different every year. Half of the time in Zone 9b we get a frost after February 15 so make sure that you are ready to protect your aubrieta if we have one of those late frosts.

USDA Zone Info for Zone 9b

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 Low25°F
Highest Expected Low30°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 Zone 9b

You may be interested in our other planting guides for Zone 9b.