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.

You can determine when it's a good idea to plant torenia in Alhambra 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 do not do well in cold weather which tells us that it is necessary to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant torenia in Alhambra 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. Any later than that and your torenia may not have a chance to grow to maturity. You can get started a little bit earlier by starting your torenia indoors.

Last Frost Date

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

Since the USDA zone info for Alhambra may not be accurate from year to year the actual date of last frost will vary from year to year. Since half of the time in Alhambra last frost occurs after January 31 be ready to protect your torenia if you have a late frost.

USDA Zone Info for Alhambra

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 Alhambra

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