When can I plant Calendula in Zone 10b

Before planting it is a good idea to find our USDA Zone info to estimate our garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for our area.

The best time to plant calendula in Zone 10b can be determined by looking at the USDA zone info.


Planting Calendar for Calendula

Frost tolerance for calendula: Tolerant of some frost.
When you should plant them: Up to 5 weeks before last frost.

Calendula are moderately cold tolerant which means that you can start planting them earlier than other plants that might not handle the cold.

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

The earliest that you can plant calendula in Zone 10b 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 calendula and expect a good harvest is probably October. You probably don't want to wait any later than that or else your calendula may not have a chance to fully mature. If you are starting your calendula indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

In Zone 10b the average date of last frost happens on January 31. We can expect an average low temperature of 35°F in the coldest months of winter.

It's important to remember that USDA zone info for Zone 10b is not always accurate and our actual date of last frost changes from year to year. Half of the time in Zone 10b it frosts late in the year after January 31 so always be ready to protect your calendula if we have a late frost.

USDA Zone Info for Zone 10b

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 Low35°F
Highest Expected Low40°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 Zone 10b

You may be interested in our other planting guides for Zone 10b.