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.

A common way of determining when it's a good idea to plant celeriac is to use the USDA zone info for Holtville.

Planting Calendar for Celeriac

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

Since celeriac are moderately cold tolerant you can plant them just a bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant celeriac in Holtville 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. If you wait any later than that and your celeriac may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your celeriac indoors.

Last Frost Date

The average date of last frost is January 31 in Holtville. It might get as low as 30°F during the coldest months of winter.

Always keep in mind that USDA zone info for Holtville is not always accurate and the actual date of last frost is different every year. Half of the time in Holtville last frost occurs after January 31 so just be sure to be ready to protect your celeriac if you have one of those late frosts.

USDA Zone Info for Holtville

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 Low	30°F
Highest Expected Low	35°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 Holtville

You may be interested in your other planting guides for Holtville.