When can I plant Tithonia in Zone 11b

One of the best tools that we have as gardeners to help us determine our gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for our area.

By using the USDA zone info for Zone 11b it's a good idea to determine when you can plant tithonia.


Planting Calendar for Tithonia

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

Since tithonia require warm weather you really should wait until after all chance of frost has passed before you can plant them.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant tithonia
Possibly ok, but a risky time to plant tithonia
Probably not a good time to plant tithonia

The earliest that you can plant tithonia in Zone 11b 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 tithonia and expect a good harvest is probably November. You probably don't want to wait any later than that or else your tithonia may not have a chance to really do well. You can get started a couple of weeks earlier by starting your tithonia indoors.

Last Frost Date

In Zone 11b it never frosts. We should expect an average low temperature of 45°F in the coldest months of winter.

Remember that USDA zone info for Zone 11b may not be accurate from year to year and our actual date of last frost is different every year. Since it never frosts in Zone 11b you do not have to be ready to protect your tithonia if we have a surprise late frost.

USDA Zone Info for Zone 11b

Here is the info for USDA Zone 11b.

Average Date of Last Frost (spring)Never
Average Date of First Frost (fall)Never
Lowest Expected Low45°F
Highest Expected Low50°F

This means that on a really cold year, the coldest it will get is 45°F. On most years you should be prepared to experience lows near 50°F.

Plants to Grow in Zone 11b

You may be interested in our other planting guides for Zone 11b.