One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The earliest that you can plant pennyroyal in Sand Springs can be estimated by using 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 are very cold tolerant which means that you can start planting them much earlier than other frost tender plants.

The earliest that you can plant pennyroyal in Sand Springs 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 really do well. Starting your pennyroyal 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 Sand Springs. You should expect an average low temperature of 0°F in the coldest months of winter.

Keep in mind that USDA zone info for Sand Springs may not be accurate from year to year and the actual date of last frost will vary from year to year. Half of the time in Sand Springs it frosts late in the year after April 15 so just be sure to be ready to protect your pennyroyal if you have a surprise late frost.

USDA Zone Info for Sand Springs

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Sand Springs

You may be interested in your other planting guides for Sand Springs.