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.

A way of making a decision about when to plant brachycome is to use the USDA zone info for San Francisco.

Planting Calendar for Brachycome

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

You really shouldn't plant brachycome until after the last frost has passed because they are not cold tolerant.

The earliest that you can plant brachycome in San Francisco 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 brachycome and expect a good harvest is probably September. You probably don't want to wait any later than that or else your brachycome may not have a chance to grow to maturity. If you are starting your brachycome indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

The average date of last frost is January 31 in San Francisco. In the coldest months of winter you should expect an average low temperature of 35°F.

It's important to remember that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for San Francisco and it can change quite a bit from year to year. Half of the time in San Francisco you get surprised by a frost after January 31 so just be sure to be ready to cover your brachycome if you have a late frost.

USDA Zone Info for San Francisco

Here is the info for USDA Zone 10b.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	35°F
Highest Expected Low	40°F

This means that on a really cold year, the coldest it will get is 35°F. On most years you should be prepared to experience lows near 40°F.

Plants to Grow in San Francisco

You may be interested in your other planting guides for San Francisco.