One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

One way of estimating when you can plant celeriac is to use the USDA zone info for Smyrna.

Planting Calendar for Celeriac

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

Celeriac do well in moderate cold which tells us that you can plant them earlier than other frost tender plants.

The earliest that you can plant celeriac in Smyrna 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. If you wait 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 little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Smyrna. You can expect an average low temperature of 0°F in the coldest months of winter.

Since the USDA zone info for Smyrna may not be accurate from year to year the actual date of last frost will vary from year to year. Since half of the time in Smyrna you get a frost after April 15 be ready to cover your celeriac in the event of one of those late frosts.

USDA Zone Info for Smyrna

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Smyrna

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