The USDA Zone info is a great tool for gardeners to help us figure out your gardening 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 determine when it's the best time to plant celeriac by looking at the USDA zone info for Ogdensburg.

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 mild cold which tells us 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 Ogdensburg is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant celeriac and expect a good harvest is probably August. If you wait any later than that and your celeriac may not have a chance to fully mature. You can get started a few weeks earlier by starting your celeriac indoors.

Last Frost Date

The average date of last frost is May 15 in Ogdensburg. In the coldest months of winter you should expect an average low temperature of -25°F.

Keep in mind that USDA zone info for Ogdensburg may not be accurate from year to year and the actual date of last frost changes from year to year. Since half of the time in Ogdensburg it frosts late in the year after May 15 be ready to cover your celeriac if you have one of those late frosts.

USDA Zone Info for Ogdensburg

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Ogdensburg

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