One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A common way of determining when it's possible to plant celeriac is to check out the USDA zone info for Pewaukee.

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 a bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant celeriac in Pewaukee 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 fully mature. Starting your celeriac indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Pewaukee. You can expect an average low temperature of -20°F in the coldest months of winter.

Since the USDA zone info for Pewaukee is just an average the actual date of last frost changes from year to year. Since half of the time in Pewaukee you get surprised by a frost after April 15 be ready to cover your celeriac in the event of one of those late frosts.

USDA Zone Info for Pewaukee

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Pewaukee

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