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.

You will be able to estimate when to plant aubrieta by checking out the USDA zone info for Snoqualmie.

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

The earliest that you can plant aubrieta in Snoqualmie 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. If you wait any later than that and your aubrieta may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your aubrieta indoors.

Last Frost Date

On average the last frost is on March 15 in Snoqualmie. You should expect an average low temperature of 15°F in the coldest months of winter.

Since the USDA zone info for Snoqualmie is an average the actual date of last frost will vary from year to year. Since half of the time in Snoqualmie you get surprised by a frost after March 15 be ready to cover your aubrieta if you have one of those late frosts.

USDA Zone Info for Snoqualmie

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 Snoqualmie

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