One of the best tools that you have as gardeners to help us determine your gardening schedule is the 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.

You can estimate when it's possible to plant foxglove in Sierra Madre by using 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 tend to make it in a little bit of cold which tells us that you can plant them a bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant foxglove in Sierra Madre 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. If you wait any later than that and your foxglove may not have a chance to grow to maturity. If you are starting your foxglove 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 Sierra Madre. You should expect an average low temperature of 30°F in the coldest months of winter.

Since the USDA zone info for Sierra Madre is not always accurate the actual date of last frost is different every year. Since half of the time in Sierra Madre you get a frost after January 31 be ready to protect your foxglove in the event of a surprise late frost.

USDA Zone Info for Sierra Madre

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 Sierra Madre

You may be interested in your other planting guides for Sierra Madre.