One of the best tools that you have as gardeners to help us estimate 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.

In Sierra Madre you can figure out when it's possible to plant digitalis by reviewing the USDA zone info.

Planting Calendar for Digitalis

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

Digitalis do well in moderate cold which tells us that you can start planting them earlier than plants that are more sensitive to the cold.

The earliest that you can plant digitalis 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 digitalis and expect a good harvest is probably October. Any later than that and your digitalis may not have a chance to fully mature. If you are starting your digitalis 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. In the coldest months of winter you should expect an average low temperature of 30°F.

Always keep in mind that USDA zone info for Sierra Madre may not be accurate from year to year and the actual date of last frost will vary from year to year. Since half of the time in Sierra Madre you get surprised by a frost after January 31 be ready to cover your digitalis if you have one of those late frosts.

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.