One of the first steps you take when you are figuring out your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Pocatello you can determine when you can plant pennyroyal by referring to the USDA zone info.

Planting Calendar for Pennyroyal

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

Pennyroyal can survive in cold weather which tells us that you can plant them much earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant pennyroyal in Pocatello 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 grow to maturity. Starting your pennyroyal indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Pocatello. In the coldest months of winter you can expect an average low temperature of -10°F.

Just be sure to remember that USDA zone info for Pocatello 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 Pocatello you get a frost after April 15 be ready to cover your pennyroyal if you have one of those late frosts.

USDA Zone Info for Pocatello

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°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 -5°F.

Plants to Grow in Pocatello

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