The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Boonville you can estimate when it's possible to plant skullcap by using the USDA zone info.

Planting Calendar for Skullcap

Frost tolerance for skullcap:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

You should not plant skullcap until after the last frost because they do not do well in cold weather.

The earliest that you can plant skullcap in Boonville 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 really do well. Starting your skullcap indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average all chance of frost has passed is on April 15 in Boonville. You can expect an average low temperature of -5°F in the coldest months of winter.

Always keep in mind that USDA zone info for Boonville is an average and the actual date of last frost changes from year to year. Half of the time in Boonville there is a last frost after April 15 so make sure that you are prepared to cover your skullcap if you have a surprise late frost.

USDA Zone Info for Boonville

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 Boonville

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