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

You should be able to determine when it's a good idea to plant skullcap by referring to the USDA zone info for Mayfield.

Planting Calendar for Skullcap

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

It's probably a bad idea to plant skullcap until after the last frost because they do not do well in cold weather.

The earliest that you can plant skullcap in Mayfield 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. If you wait any later than that and your skullcap may not have a chance to grow to maturity. Starting your skullcap 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 Mayfield. It might get as low as 0°F during the coldest months of winter.

Since the USDA zone info for Mayfield is an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Mayfield it frosts late in the year after April 15 be ready to protect your skullcap if you have a late frost.

USDA Zone Info for Mayfield

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 Mayfield

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