One of the first steps you take when you are making a decision about your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A common way of estimating when it's a good idea to plant aubrieta is to check out the USDA zone info for Harker Heights.

Planting Calendar for Aubrieta

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

Aubrieta are moderately cold tolerant which tells us that you can get them planted earlier than more sensitive plants.

The earliest that you can plant aubrieta in Harker Heights 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 really do well. If you are starting your aubrieta indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on March 15 in Harker Heights. It might get as low as 15°F during the coldest months of winter.

Since the USDA zone info for Harker Heights is an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Harker Heights you get a frost after March 15 be ready to protect your aubrieta if you have a surprise late frost.

USDA Zone Info for Harker Heights

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°F

This means that on a really cold year, the coldest it will get is 15°F. On most years you should be prepared to experience lows near 20°F.

Plants to Grow in Harker Heights

You may be interested in your other planting guides for Harker Heights.