One of the first steps you take when you are determining 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 Twentynine Palms you can figure out when to plant xerianthemum by looking at the USDA zone info.

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.

Xerianthemum do ok in moderate cold which means that you can plant them slightly earlier than other plants that might not handle the cold.

The earliest that you can plant xerianthemum in Twentynine Palms 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 really do well. You can get started a little bit earlier by starting your xerianthemum indoors.

Last Frost Date

The average date of last frost is February 15 in Twentynine Palms. It might get as low as 20°F during the coldest months of winter.

It's important to remember that USDA zone info for Twentynine Palms is not always accurate and the actual date of last frost changes from year to year. Half of the time in Twentynine Palms you get a frost after February 15 so be sure to be ready to cover your xerianthemum if you have a surprise late frost.

USDA Zone Info for Twentynine Palms

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Twentynine Palms

You may be interested in your other planting guides for Twentynine Palms.