Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You should be able to estimate when to plant celeriac by checking out the USDA zone info for Sylvania.

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 tells us that you can plant them a little bit earlier in the year than other frost tender plants.

The earliest that you can plant celeriac in Sylvania 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 fully mature. If you are starting your celeriac indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average all chance of frost has passed is on April 15 in Sylvania. It might get as low as -10°F during the coldest months of winter.

Since the USDA zone info for Sylvania is just an average the actual date of last frost changes from year to year. Half of the time in Sylvania last frost occurs after April 15 so always be ready to protect your celeriac if you have one of those late frosts.

USDA Zone Info for Sylvania

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Sylvania

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