When can I plant Sweet Potatos in Zone 12b

One of the best tools that we have as gardeners to help us determine our gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for our area.

In Zone 12b you can determine when it's the best time to plant sweet potatos by using the USDA zone info.


Planting Calendar for Sweet Potatos

Frost tolerance for sweet potatos: Not tolerant of frost.
When you should plant them: After the last frost has passed.

Since sweet potatos are not cold tolerant you need to wait until after the last frost before you can plant them.

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

The earliest that you can plant sweet potatos 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 potatos and expect a good harvest is probably November. If you wait any later than that and your sweet potatos may not have a chance to really do well. You can get started a few weeks earlier by starting your sweet potatos indoors.

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.

Always keep in mind 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 sweet potatos if we have 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.