One of the first steps you take when you are determining your gardening schedule is find your 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.

It's possible to figure out when it's a good idea to plant armeria by reviewing the USDA zone info for San Rafael.

Planting Calendar for Armeria

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

Since armeria do well in cold you can plant them a lot earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant armeria 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 armeria and expect a good harvest is probably October. Any later than that and your armeria may not have a chance to fully mature. If you are starting your armeria indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

In San Rafael the average date of last frost happens on January 31. In the coldest months of winter you should 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. Since half of the time in San Rafael there is a last frost after January 31 be ready to protect your armeria if you have a surprise late frost.

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.