One of the first steps you take when you are getting a good idea 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.

The USDA zone info for Millbrae can be looked at to figure out when it's possible to plant liatris.

Planting Calendar for Liatris

Frost tolerance for liatris:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Liatris do well in cold which means that you can plant them a quite a bit earlier than other plants that might not handle the cold.

The earliest that you can plant liatris in Millbrae 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 liatris and expect a good harvest is probably October. If you wait any later than that and your liatris may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your liatris indoors.

Last Frost Date

On average all chance of frost has passed is on January 31 in Millbrae. You can expect an average low temperature of 30°F in the coldest months of winter.

Since the USDA zone info for Millbrae is not always accurate the actual date of last frost can change quite a bit from year to year. Since half of the time in Millbrae you get surprised by a frost after January 31 be ready to protect your liatris in the event of a surprise late frost.

USDA Zone Info for Millbrae

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Millbrae

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