When to Plant Rhubarb in Zone 11b

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

The earliest that you can plant rhubarb in Zone 11b can be figured out by using the USDA zone info.


Planting Calendar for Rhubarb

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

Rhubarb tend to make it in mild cold which tells us that you can plant them a little earlier in the year than plants that are more sensitive to the cold.

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 11b 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. Any later than that and your rhubarb may not have a chance to really do well. You can get started a couple of weeks earlier by starting your rhubarb indoors.

Last Frost Date

In Zone 11b it never frosts. It might get as low as 45°F during the coldest months of winter.

Since the USDA zone info for Zone 11b may not be accurate from year to year the actual date of last frost changes from year to year. Since it never frosts in Zone 11b you do not have to be ready to cover your rhubarb in the event of one of those late frosts.

USDA Zone Info for Zone 11b

Here is the info for USDA Zone 11b.

Average Date of Last Frost (spring)Never
Average Date of First Frost (fall)Never
Lowest Expected Low45°F
Highest Expected Low50°F

This means that on a really cold year, the coldest it will get is 45°F. On most years you should be prepared to experience lows near 50°F.

Plants to Grow in Zone 11b

You may be interested in your other planting guides for Zone 11b.