One of the first steps you take when you are figuring out 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.

In Millbrae you can figure out when it's a good idea to plant torenia by using the USDA zone info.

Planting Calendar for Torenia

Frost tolerance for torenia:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

Torenia require warm weather which means that you must wait until it warms up after all chance of frost has passed before you can plant them.

The earliest that you can plant torenia in Millbrae 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 torenia and expect a good harvest is probably September. You probably don't want to wait any later than that or else your torenia may not have a chance to really do well. You can get started a few weeks earlier by starting your torenia indoors.

Last Frost Date

On average the last frost is on January 31 in Millbrae. In the coldest months of winter you can expect an average low temperature of 30°F.

Always keep in mind that the actual date of last frost is an average because it is based on the USDA zone info for Millbrae and it will vary 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 torenia if you have 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.