The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You can figure out when you can plant green beans in South San Francisco by looking at the USDA zone info.

Planting Calendar for Green beans

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

It's a bad idea to plant green beans until after the last frost has passed because they do not do well in cold weather.

The earliest that you can plant green beans in South 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 green beans and expect a good harvest is probably September. You probably don't want to wait any later than that or else your green beans may not have a chance to fully mature. You can get started a few weeks earlier by starting your green beans indoors.

Last Frost Date

The average date of last frost is January 31 in South San Francisco. You can expect an average low temperature of 30°F in the coldest months of winter.

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 South San Francisco and it is different every year. Since half of the time in South San Francisco you get a frost after January 31 be ready to cover your green beans in the event of one of those late frosts.

USDA Zone Info for South San Francisco

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in South San Francisco

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