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

A way of making a decision about when it's a good idea to plant digitalis is to use the USDA zone info for Huntsville.

Planting Calendar for Digitalis

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

Since digitalis do well in moderate cold you can plant them a little earlier in the year than other plants that might not handle the cold.

The earliest that you can plant digitalis in Huntsville 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 digitalis and expect a good harvest is probably September. You probably don't want to wait any later than that or else your digitalis may not have a chance to really do well. Starting your digitalis indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Huntsville. In the coldest months of winter you should expect an average low temperature of 5°F.

Since the USDA zone info for Huntsville is not always accurate the actual date of last frost is different every year. Half of the time in Huntsville last frost occurs after April 15 so be sure to be ready to protect your digitalis in the event of one of those late frosts.

USDA Zone Info for Huntsville

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 Huntsville

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