When can I plant Coleus in Zone 10b

The USDA Zone info is a great tool for gardeners to help us figure out our gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for our area.

In Zone 10b you can determine when it's possible to plant coleus by referring to the USDA zone info.


Planting Calendar for Coleus

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

Coleus are not cold tolerant which tells us that it is necessary to wait until it warms up after all chance of frost has passed before you can plant them.

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

The earliest that you can plant coleus in Zone 10b 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 coleus and expect a good harvest is probably September. If you wait any later than that and your coleus may not have a chance to really do well. If you are starting your coleus indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

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

Keep in mind that USDA zone info for Zone 10b is not always accurate and our actual date of last frost is different every year. Since half of the time in Zone 10b there is a last frost after January 31 be ready to protect your coleus in the event of a surprise 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.