The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A way of determining when it's the best time to plant tithonia is to consult the USDA zone info for San Fernando.

Planting Calendar for Tithonia

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

You really shouldn't plant tithonia until after all chance of frost has passed because they require warm weather.

The earliest that you can plant tithonia in San Fernando 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 tithonia and expect a good harvest is probably September. If you wait any later than that and your tithonia may not have a chance to grow to maturity. You can get started a little bit earlier by starting your tithonia indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on January 31 in San Fernando. You should expect an average low temperature of 30°F in the coldest months of winter.

Since the USDA zone info for San Fernando is not always accurate the actual date of last frost changes from year to year. Since half of the time in San Fernando you get surprised by a frost after January 31 be ready to protect your tithonia if you have a surprise late frost.

USDA Zone Info for San Fernando

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 Fernando

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