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

One way of estimating when you can plant aubrieta is to examine the USDA zone info for Circleville.

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 mild 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 Circleville is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant aubrieta and expect a good harvest is probably September. You probably don't want to wait any later than that or else your aubrieta may not have a chance to fully mature. Starting your aubrieta indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Circleville. In the coldest months of winter you should expect an average low temperature of -10°F.

Since the USDA zone info for Circleville is not always accurate the actual date of last frost will vary from year to year. Half of the time in Circleville last frost occurs after April 15 so make sure that you are prepared to cover your aubrieta in the event of a surprise late frost.

USDA Zone Info for Circleville

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Circleville

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