When can I plant Columbine 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 zone info helps tell us things like average date of last frost and lowest expected temperature for our area.

You should be able to estimate when it's possible to plant columbine by looking at the USDA zone info for Zone 12b.


Planting Calendar for Columbine

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

Columbine do well in mild cold which tells us that you can plant them a bit earlier in the year than other plants that might not handle the cold.

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

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

Last Frost Date

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

Since the USDA zone info for Zone 12b is not always accurate 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 protect your columbine if we have a surprise 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.