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

By looking at the USDA zone info for Fairfax you will be able to estimate when it's the best time 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.

Since xerianthemum do ok in moderate cold you can plant them slightly earlier in the year than other frost tender plants.

The earliest that you can plant xerianthemum in Fairfax 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 grow to maturity. You can get started a few weeks earlier by starting your xerianthemum indoors.

Last Frost Date

The average date of last frost is February 15 in Fairfax. In the coldest months of winter you should expect an average low temperature of 25°F.

Remember that USDA zone info for Fairfax is not always accurate and the actual date of last frost will vary from year to year. Since half of the time in Fairfax it frosts late in the year after February 15 be ready to protect your xerianthemum if you have a late frost.

USDA Zone Info for Fairfax

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 Fairfax

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