When can I plant Geranium in Zone 12b

One of the first steps we take when we are making a decision about our gardening schedule is find our USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for our area.

A common way of determining when to plant geranium is to refer to the USDA zone info for Zone 12b.


Planting Calendar for Geranium

Frost tolerance for geranium: Not tolerant of frost.
When you should plant them: After the last frost.

Since geranium do not do well in cold weather it's necessary to wait until after the last frost when the weather gets warmer before you can plant them.

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

The earliest that you can plant geranium in Zone 12b 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 geranium and expect a good harvest is probably November. You probably don't want to wait any later than that or else your geranium may not have a chance to fully mature. Starting your geranium indoors is a great way to get them started a little bit earlier.

Last Frost Date

In Zone 12b it never frosts. We can expect an average low temperature of 55°F in the coldest months of winter.

It's important to remember that USDA zone info for Zone 12b is not always accurate and our actual date of last frost will vary from year to year. Since it never frosts in Zone 12b you do not have to be ready to cover your geranium if we have a late frost.

USDA Zone Info for Zone 12b

Here is the info for USDA Zone 12b.

Average Date of Last Frost (spring)Never
Average Date of First Frost (fall)Never
Lowest Expected Low55°F
Highest Expected Low60°F

This means that on a really cold year, the coldest it will get is 55°F. On most years you should be prepared to experience lows near 60°F.

Plants to Grow in Zone 12b

You may be interested in our other planting guides for Zone 12b.