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

A way of determining when it's possible to plant skullcap is to refer to the USDA zone info for Fairview Heights.

Planting Calendar for Skullcap

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

It's not a good idea to plant skullcap until after the last frost when the weather gets warmer because they require warm weather.

The earliest that you can plant skullcap in Fairview Heights 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. If you are starting your skullcap indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

In Fairview Heights the average date of last frost happens on April 15. 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 Fairview Heights is an average and the actual date of last frost is different every year. Half of the time in Fairview Heights you get a frost after April 15 so just be sure to be ready to protect your skullcap in the event of a surprise late frost.

USDA Zone Info for Fairview Heights

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 Fairview Heights

You may be interested in your other planting guides for Fairview Heights.