When can I plant Primroses in Zone 11b

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

The USDA zone info for Zone 11b should be reffered to in order to figure out when it's a good idea to plant primroses.


Planting Calendar for Primroses

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

Primroses do well in cold weather which tells us that you can plant them much earlier in the year than more sensitive plants.

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

The earliest that you can plant primroses 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 primroses and expect a good harvest is probably November. Any later than that and your primroses may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your primroses indoors.

Last Frost Date

In Zone 11b it never frosts. In the coldest months of winter we can expect an average low temperature of 45°F.

Remember that our actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Zone 11b and it can change quite a bit from year to year. Since it never frosts in Zone 11b you do not have to be ready to cover your primroses if we have a late frost.

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 our other planting guides for Zone 11b.