The USDA Zone info is a great tool for gardeners to help us figure out 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.

The USDA zone info for San Jacinto should be looked at to determine when it's possible to plant cerastium.

Planting Calendar for Cerastium

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

Cerastium are moderately cold tolerant which tells us that you can get them planted earlier than other frost tender plants.

The earliest that you can plant cerastium in San Jacinto 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 cerastium and expect a good harvest is probably October. Any later than that and your cerastium may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your cerastium indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in San Jacinto. It might get as low as 25°F during the coldest months of winter.

Remember that USDA zone info for San Jacinto is not always accurate and the actual date of last frost can change quite a bit from year to year. Since half of the time in San Jacinto there is a last frost after February 15 be ready to protect your cerastium if you have a late frost.

USDA Zone Info for San Jacinto

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in San Jacinto

You may be interested in your other planting guides for San Jacinto.