Before planting it is a good idea to find your USDA Zone info to determine your garden 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 getting a good idea when to plant celeriac is to refer to the USDA zone info for Grand Ledge.

Planting Calendar for Celeriac

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

Celeriac do ok in some cold which means that you can plant them a little bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant celeriac in Grand Ledge is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant celeriac and expect a good harvest is probably September. Any later than that and your celeriac may not have a chance to really do well. If you are starting your celeriac indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average the last frost is on April 15 in Grand Ledge. It might get as low as -15°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Grand Ledge may not be accurate from year to year and the actual date of last frost changes from year to year. Half of the time in Grand Ledge last frost occurs after April 15 so make sure that you are ready to cover your celeriac in the event of one of those late frosts.

USDA Zone Info for Grand Ledge

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Grand Ledge

You may be interested in your other planting guides for Grand Ledge.