When can I plant Fennel in Zone 12a

Before planting it is a good idea to find our USDA Zone info to figure out our garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for our area.

It's possible to determine when it's a good idea to plant fennel by looking at the USDA zone info for Zone 12a.


Planting Calendar for Fennel

Frost tolerance for fennel: Very tolerant of frost.
When you should plant them: Up to 7 weeks before last frost.

Since fennel are very cold tolerant you can plant them a lot earlier in the year than other frost tender plants.

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

The earliest that you can plant fennel in Zone 12a 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 fennel and expect a good harvest is probably November. Any later than that and your fennel may not have a chance to grow to maturity. If you are starting your fennel indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

In Zone 12a it never frosts. In the coldest months of winter we should expect an average low temperature of 50°F.

Since the USDA zone info for Zone 12a is not always accurate our actual date of last frost can change quite a bit from year to year. Since it never frosts in Zone 12a you do not have to be ready to cover your fennel in the event of a surprise late frost.

USDA Zone Info for Zone 12a

Here is the info for USDA Zone 12a.

Average Date of Last Frost (spring)Never
Average Date of First Frost (fall)Never
Lowest Expected Low50°F
Highest Expected Low55°F

This means that on a really cold year, the coldest it will get is 50°F. On most years you should be prepared to experience lows near 55°F.

Plants to Grow in Zone 12a

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