One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A common way of making a decision about when it's the best time to plant skullcap is to use the USDA zone info for Zone 13a.

Planting Calendar for Skullcap

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

Skullcap require warm weather which tells us that it is important to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant skullcap in Zone 13a is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant skullcap and expect a good harvest is probably November. 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

In Zone 13a it never frosts. In the coldest months of winter you can expect an average low temperature of 60°F.

It's important to remember that the actual date of last frost is just an average because it is based on the USDA zone info for Zone 13a and it changes from year to year. Since it never frosts in Zone 13a you do not have to be ready to protect your skullcap if you have a surprise late frost.

USDA Zone Info for Zone 13a

Here is the info for USDA Zone 13a.

Average Date of Last Frost (spring)	Never
Average Date of First Frost (fall)	Never
Lowest Expected Low	60°F
Highest Expected Low	65°F

This means that on a really cold year, the coldest it will get is 60°F. On most years you should be prepared to experience lows near 65°F.

Plants to Grow in Zone 13a

You may be interested in your other planting guides for Zone 13a.