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.

One way of estimating when it's possible to plant penstemon is to use the USDA zone info for Albertville.

Planting Calendar for Penstemon

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

Penstemon are moderately cold tolerant which means that you can get them planted earlier than more sensitive plants.

The earliest that you can plant penstemon in Albertville 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 penstemon and expect a good harvest is probably September. Any later than that and your penstemon may not have a chance to fully mature. You can get started a few weeks earlier by starting your penstemon indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Albertville. You can expect an average low temperature of 5°F in the coldest months of winter.

Remember that USDA zone info for Albertville is not always accurate and the actual date of last frost will vary from year to year. Since half of the time in Albertville last frost occurs after April 15 be ready to protect your penstemon if you have a late frost.

USDA Zone Info for Albertville

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 Albertville

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