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

The first opportunity to plant skullcap in Pasadena can be figured out by referring to 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.

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

The earliest that you can plant skullcap in Pasadena 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. Any later than that and your skullcap may not have a chance to fully mature. You can get started a few weeks earlier by starting your skullcap indoors.

Last Frost Date

The average date of last frost is January 31 in Pasadena. In the coldest months of winter you should expect an average low temperature of 30°F.

Since the USDA zone info for Pasadena is not always accurate the actual date of last frost can change quite a bit from year to year. Half of the time in Pasadena last frost occurs after January 31 so make sure that you are prepared to protect your skullcap if you have one of those late frosts.

USDA Zone Info for Pasadena

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 Pasadena

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