When can I plant Sweet corn in Zone 12b

The USDA Zone info is a great tool for gardeners to help us figure out our gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for our area.

A common way of making a decision about when it's possible to plant sweet corn is to consult the USDA zone info for Zone 12b.


Planting Calendar for Sweet corn

Frost tolerance for sweet corn: Tolerant of a very small amount of frost.
When you should plant them: Up to 3 weeks before last frost.

Sweet corn do well in some cold which means that you can plant them a bit earlier in the year than more sensitive plants.

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

The earliest that you can plant sweet corn 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 sweet corn and expect a good harvest is probably November. Any later than that and your sweet corn may not have a chance to fully mature. Starting your sweet corn indoors is a great way to get them started 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.

Just be sure to remember that USDA zone info for Zone 12b is just an average and our actual date of last frost changes from year to year. Since it never frosts in Zone 12b you do not have to be ready to cover your sweet corn in the event of one of those late frosts.

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.