One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for San Francisco should be reffered to in order to figure out when to plant guara.

Planting Calendar for Guara

Frost tolerance for guara:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

It's a bad idea to plant guara until after the last frost when the weather gets warmer because they do not do well in cold weather.

The earliest that you can plant guara 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 guara and expect a good harvest is probably September. You probably don't want to wait any later than that or else your guara may not have a chance to really do well. If you are starting your guara 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. It might get as low as 35°F during the coldest months of winter.

Just be sure 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 changes from year to year. Half of the time in San Francisco you get a frost after January 31 so just be sure to be ready to cover your guara 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.