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

The USDA zone info for South Bay can be used to figure out when it's a good idea to plant skullcap.

Planting Calendar for Skullcap

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

Since skullcap require warm weather it's important to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant skullcap in South Bay is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant skullcap and expect a good harvest is probably September. If you wait any later than that and your skullcap may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your skullcap indoors.

Last Frost Date

On average all chance of frost has passed is on January 31 in South Bay. It might get as low as 30°F during the coldest months of winter.

Keep in mind that USDA zone info for South Bay is not always accurate and the actual date of last frost is different every year. Half of the time in South Bay there is a last frost after January 31 so be sure to be ready to protect your skullcap in the event of a surprise late frost.

USDA Zone Info for South Bay

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in South Bay

You may be interested in your other planting guides for South Bay.