One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You will be able to figure out when it's the best time to plant celeriac by checking out the USDA zone info for Zone 10b.

Planting Calendar for Celeriac

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

You can plant celeriac a little earlier in the year because they do well in moderate cold.

The earliest that you can plant celeriac in Zone 10b 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 celeriac and expect a good harvest is probably October. You probably don't want to wait any later than that or else your celeriac may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your celeriac indoors.

Last Frost Date

On average the last frost has passed is on January 31 in Zone 10b. In the coldest months of winter you should expect an average low temperature of 35°F.

Since the USDA zone info for Zone 10b is not always accurate the actual date of last frost will vary from year to year. Since half of the time in Zone 10b you get surprised by a frost after January 31 be ready to cover your celeriac in the event of a surprise late frost.

USDA Zone Info for Zone 10b

Here is the info for USDA Zone 10b.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	35°F
Highest Expected Low	40°F

This means that on a really cold year, the coldest it will get is 35°F. On most years you should be prepared to experience lows near 40°F.

Plants to Grow in Zone 10b

You may be interested in your other planting guides for Zone 10b.