Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of figuring out when it's a good idea to plant cerastium is to consult the USDA zone info for Holtville.

Planting Calendar for Cerastium

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

Cerastium tend to make it in mild cold which tells us that you can plant them a little earlier in the year than more sensitive plants.

The earliest that you can plant cerastium in Holtville 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 really do well. Starting your cerastium indoors is a great way to get them started a little bit earlier.

Last Frost Date

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

Since the USDA zone info for Holtville is just an average the actual date of last frost changes from year to year. Half of the time in Holtville it frosts late in the year after January 31 so always be ready to cover your cerastium if you have a surprise late frost.

USDA Zone Info for Holtville

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 Holtville

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