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.

The first chance to plant skullcap in Carrollton can be estimated by looking at the USDA zone info.

Planting Calendar for Skullcap

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

Skullcap are not cold tolerant which tells us that you have to wait until it warms up after all chance of frost has passed before you can plant them.

The earliest that you can plant skullcap in Carrollton 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 really do well. You can get started a couple of weeks earlier by starting your skullcap indoors.

Last Frost Date

The average date of last frost is March 15 in Carrollton. In the coldest months of winter you can expect an average low temperature of 10°F.

Since the USDA zone info for Carrollton may not be accurate from year to year the actual date of last frost will vary from year to year. Half of the time in Carrollton there is a last frost after March 15 so always be ready to cover your skullcap in the event of a surprise late frost.

USDA Zone Info for Carrollton

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°F

This means that on a really cold year, the coldest it will get is 10°F. On most years you should be prepared to experience lows near 15°F.

Plants to Grow in Carrollton

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