When can I plant Potatos in Zone 10a

One of the first steps we take when we are getting a good idea our gardening schedule is find our USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for our area.

A way of estimating when it's a good idea to plant potatos is to examine the USDA zone info for Zone 10a.


Planting Calendar for Potatos

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

Potatos do ok in pretty solid cold which means that you can plant them earlier in the year than more sensitive plants.

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

The earliest that you can plant potatos in Zone 10a 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 potatos and expect a good harvest is probably October. You probably don't want to wait any later than that or else your potatos may not have a chance to fully mature. If you are starting your potatos indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

In Zone 10a the average date of last frost happens on January 31. We can expect an average low temperature of 30°F in the coldest months of winter.

Since the USDA zone info for Zone 10a is not always accurate our actual date of last frost is different every year. Half of the time in Zone 10a last frost occurs after January 31 so just be sure to be ready to cover your potatos if we have a surprise late frost.

USDA Zone Info for Zone 10a

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)January 31
Average Date of First Frost (fall)December 15
Lowest Expected Low30°F
Highest Expected Low35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Zone 10a

You may be interested in our other planting guides for Zone 10a.