The USDA Zone info is a great tool for gardeners to help us figure out 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.

In San Rafael you can figure out when it's a good idea to plant garlic by using the USDA zone info.

Planting Calendar for Garlic

Frost tolerance for garlic:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

You can plant garlic a lot earlier in the year because they do well in cold.

The earliest that you can plant garlic in San Rafael 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 garlic and expect a good harvest is probably October. You probably don't want to wait any later than that or else your garlic may not have a chance to fully mature. You can get started a little bit earlier by starting your garlic indoors.

Last Frost Date

On average all chance of frost has passed is on January 31 in San Rafael. In the coldest months of winter you can expect an average low temperature of 30°F.

Since the USDA zone info for San Rafael is just an average the actual date of last frost is different every year. Half of the time in San Rafael it frosts late in the year after January 31 so always be ready to cover your garlic if you have one of those late frosts.

USDA Zone Info for San Rafael

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 San Rafael

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