One of the first steps you take when you are estimating 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 Fullerton should be used to determine when it's a good idea to plant xerianthemum.

Planting Calendar for Xerianthemum

Frost tolerance for xerianthemum:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

You can plant xerianthemum just a tiny bit earlier in the year because they are barely cold tolerant.

The earliest that you can plant xerianthemum in Fullerton 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 xerianthemum and expect a good harvest is probably September. You probably don't want to wait any later than that or else your xerianthemum may not have a chance to fully mature. If you are starting your xerianthemum indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on January 31 in Fullerton. 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 may not be accurate from year to year because it is based on the USDA zone info for Fullerton and it changes from year to year. Since half of the time in Fullerton you get surprised by a frost after January 31 be ready to cover your xerianthemum in the event of one of those late frosts.

USDA Zone Info for Fullerton

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 Fullerton

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