One of the first steps you take when you are getting a good idea your gardening schedule is find your USDA Zone info. 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 Sebastopol can be looked at to estimate when it's the best time to plant chrysocephalum.

Planting Calendar for Chrysocephalum

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

You should not plant chrysocephalum until after the last frost because they are not cold tolerant.

The earliest that you can plant chrysocephalum in Sebastopol is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant chrysocephalum and expect a good harvest is probably September. Any later than that and your chrysocephalum may not have a chance to really do well. Starting your chrysocephalum indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average all chance of frost has passed is on February 15 in Sebastopol. You can expect an average low temperature of 20°F in the coldest months of winter.

Since the USDA zone info for Sebastopol is just an average the actual date of last frost changes from year to year. Half of the time in Sebastopol there is a last frost after February 15 so be sure to be ready to cover your chrysocephalum if you have a late frost.

USDA Zone Info for Sebastopol

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Sebastopol

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