One of the best tools that you have as gardeners to help us estimate 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.

The USDA zone info for Perryville should be reffered to in order to determine when you can plant skullcap.

Planting Calendar for Skullcap

Frost tolerance for skullcap:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Since skullcap require warm weather it is necessary to wait until after the last frost before you can plant them.

The earliest that you can plant skullcap in Perryville is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant skullcap and expect a good harvest is probably August. You probably don't want to wait any later than that or else your skullcap may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your skullcap indoors.

Last Frost Date

In Perryville the average date of last frost happens on April 15. In the coldest months of winter you should expect an average low temperature of -5°F.

Remember that USDA zone info for Perryville is not always accurate and the actual date of last frost will vary from year to year. Half of the time in Perryville you get surprised by a frost after April 15 so make sure that you are ready to cover your skullcap in the event of one of those late frosts.

USDA Zone Info for Perryville

Here is the info for USDA Zone 6b.

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

Plants to Grow in Perryville

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