One of the best tools that you have as gardeners to help us figure out 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 maltese cross in San Francisco should be estimated by referring to the USDA zone info.

Planting Calendar for Maltese Cross

Frost tolerance for maltese cross:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

You can plant maltese cross a little bit earlier in the year because they are moderately cold tolerant.

The earliest that you can plant maltese cross in San Francisco is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant maltese cross and expect a good harvest is probably October. Any later than that and your maltese cross may not have a chance to fully mature. You can get started a few weeks earlier by starting your maltese cross indoors.

Last Frost Date

In San Francisco the average date of last frost happens on January 31. You can expect an average low temperature of 35°F in the coldest months of winter.

Just be sure to remember that USDA zone info for San Francisco is an average and the actual date of last frost will vary from year to year. Half of the time in San Francisco you get surprised by a frost after January 31 so be sure to be ready to cover your maltese cross in the event of one of those late frosts.

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.