Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. 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 penstemon in Biloxi by looking at the USDA zone info.

Planting Calendar for Penstemon

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

Since penstemon are moderately cold tolerant you can plant them a bit earlier in the year than other frost tender plants.

The earliest that you can plant penstemon in Biloxi 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 penstemon and expect a good harvest is probably October. If you wait any later than that and your penstemon may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your penstemon indoors.

Last Frost Date

The average date of last frost is February 15 in Biloxi. You can expect an average low temperature of 20°F in the coldest months of winter.

Remember that USDA zone info for Biloxi is not always accurate and the actual date of last frost is different every year. Since half of the time in Biloxi you get surprised by a frost after February 15 be ready to cover your penstemon if you have a late frost.

USDA Zone Info for Biloxi

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Biloxi

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