Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By reviewing the USDA zone info for Sonoma it's a good idea to determine when to plant brachycome.

Planting Calendar for Brachycome

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

Since brachycome require warm weather it is important to wait until after the last frost before you can plant them.

The earliest that you can plant brachycome in Sonoma 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 brachycome and expect a good harvest is probably September. Any later than that and your brachycome may not have a chance to really do well. Starting your brachycome indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost has passed is on February 15 in Sonoma. In the coldest months of winter you should expect an average low temperature of 25°F.

Remember that the actual date of last frost is an average because it is based on the USDA zone info for Sonoma and it changes from year to year. Half of the time in Sonoma there is a last frost after February 15 so just be sure to be ready to cover your brachycome if you have a late frost.

USDA Zone Info for Sonoma

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Sonoma

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