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.

One way of figuring out when it's a good idea to plant hamelia is to refer to the USDA zone info for San Francisco.

Planting Calendar for Hamelia

Frost tolerance for hamelia:	Not tolerant of frost.
When to plant:	After the last frost has passed.

Since hamelia require warm weather you must wait until after the last frost before you can plant them.

The earliest that you can plant hamelia 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 hamelia and expect a good harvest is probably September. You probably don't want to wait any later than that or else your hamelia may not have a chance to really do well. If you are starting your hamelia indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

The average date of last frost is January 31 in San Francisco. In the coldest months of winter you should expect an average low temperature of 35°F.

It's important to remember that the actual date of last frost is not always accurate because it is based on the USDA zone info for San Francisco and it is different every year. Since half of the time in San Francisco you get a frost after January 31 be ready to protect your hamelia in the event of a surprise late frost.

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.