When can I plant Dahlias in Zone 13b

One of the best tools that we have as gardeners to help us figure out our gardening schedule is the 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.

You should be able to estimate when you can plant dahlias by looking at the USDA zone info for Zone 13b.


Planting Calendar for Dahlias

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

You can not plant dahlias until after the last frost because they require warm weather.

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

The earliest that you can plant dahlias in Zone 13b 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 dahlias and expect a good harvest is probably November. You probably don't want to wait any later than that or else your dahlias may not have a chance to really do well. You can get started a few weeks earlier by starting your dahlias indoors.

Last Frost Date

In Zone 13b it never frosts. We can expect an average low temperature of 65°F in the coldest months of winter.

Remember that USDA zone info for Zone 13b is an average and our actual date of last frost will vary from year to year. Since it never frosts in Zone 13b you do not have to be ready to cover your dahlias in the event of a late frost.

USDA Zone Info for Zone 13b

Here is the info for USDA Zone 13b.

Average Date of Last Frost (spring)Never
Average Date of First Frost (fall)Never
Lowest Expected Low65°F
Highest Expected Low70°F

This means that on a really cold year, the coldest it will get is 65°F. On most years you should be prepared to experience lows near 70°F.

Plants to Grow in Zone 13b

You may be interested in our other planting guides for Zone 13b.