Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You should be able to determine when you can plant pennyroyal by checking out the USDA zone info for Tuscaloosa.

Planting Calendar for Pennyroyal

Frost tolerance for pennyroyal:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Pennyroyal are very cold tolerant which means that you can start planting them much earlier than plants that are more sensitive to the cold.

The earliest that you can plant pennyroyal in Tuscaloosa 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 pennyroyal and expect a good harvest is probably September. You probably don't want to wait any later than that or else your pennyroyal may not have a chance to fully mature. If you are starting your pennyroyal indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average the last frost has passed is on March 15 in Tuscaloosa. You should expect an average low temperature of 10°F in the coldest months of winter.

Since the USDA zone info for Tuscaloosa is an average the actual date of last frost is different every year. Since half of the time in Tuscaloosa there is a last frost after March 15 be ready to cover your pennyroyal if you have a surprise late frost.

USDA Zone Info for Tuscaloosa

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°F

This means that on a really cold year, the coldest it will get is 10°F. On most years you should be prepared to experience lows near 15°F.

Plants to Grow in Tuscaloosa

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