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

In San Marcos you can determine when it's a good idea to plant foxglove by referring to the USDA zone info.

Planting Calendar for Foxglove

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

Foxglove do well in some cold which tells us that you can plant them a bit earlier in the year than more sensitive plants.

The earliest that you can plant foxglove in San Marcos 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 foxglove and expect a good harvest is probably October. Any later than that and your foxglove may not have a chance to really do well. Starting your foxglove indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

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

Just be sure to remember that USDA zone info for San Marcos is just an average and the actual date of last frost changes from year to year. Since half of the time in San Marcos there is a last frost after January 31 be ready to cover your foxglove if you have one of those late frosts.

USDA Zone Info for San Marcos

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 San Marcos

You may be interested in your other planting guides for San Marcos.