One of the first steps you take when you are getting a good idea your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of determining when to plant aubrieta is to check out the USDA zone info for Windsor.

Planting Calendar for Aubrieta

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

Aubrieta do well in moderate cold which means that you can plant them just a bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant aubrieta in Windsor 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. You can get started a couple of weeks earlier by starting your aubrieta indoors.

Last Frost Date

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

Since the USDA zone info for Windsor may not be accurate from year to year the actual date of last frost is different every year. Half of the time in Windsor it frosts late in the year after February 15 so be sure to be ready to protect your aubrieta in the event of a late frost.

USDA Zone Info for Windsor

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 Windsor

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