One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

One way of getting a good idea when it's possible to plant xerianthemum is to refer to the USDA zone info for South Boston.

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 are barely cold tolerant you can plant them slightly earlier in the year than more sensitive plants.

The earliest that you can plant xerianthemum in South Boston is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant xerianthemum and expect a good harvest is probably August. Any later than that and 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 April 15 in South Boston. In the coldest months of winter you can expect an average low temperature of 5°F.

Since the USDA zone info for South Boston is not always accurate the actual date of last frost changes from year to year. Half of the time in South Boston you get surprised by a frost after April 15 so make sure that you are ready to protect your xerianthemum if you have one of those late frosts.

USDA Zone Info for South Boston

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°F

This means that on a really cold year, the coldest it will get is 5°F. On most years you should be prepared to experience lows near 10°F.

Plants to Grow in South Boston

You may be interested in your other planting guides for South Boston.