When can I plant Rhubarb in Zone 12a

One of the first steps we take when we are making a decision about our gardening schedule is find our 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.

By using the USDA zone info for Zone 12a it's a good idea to figure out when to plant rhubarb.


Planting Calendar for Rhubarb

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

You can plant rhubarb a little bit earlier in the year because they are one of those plants that can tolerate a little bit of cold weather.

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

The earliest that you can plant rhubarb 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 rhubarb and expect a good harvest is probably November. You probably don't want to wait any later than that or else your rhubarb may not have a chance to fully mature. Starting your rhubarb indoors is a great way to get them started 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 an average our actual date of last frost changes from year to year. Since it never frosts in Zone 12a you do not have to be ready to protect your rhubarb in the event of one of those late frosts.

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.