One of the best tools that you have as gardeners to help us figure out 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.

A way of estimating when it's possible to plant celeriac is to examine the USDA zone info for Weiser.

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 more sensitive plants.

The earliest that you can plant celeriac in Weiser 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. You can get started a couple of weeks earlier by starting your celeriac indoors.

Last Frost Date

On average the last frost is on April 15 in Weiser. It might get as low as -5°F during the coldest months of winter.

Always keep in mind that the actual date of last frost is just an average because it is based on the USDA zone info for Weiser and it changes from year to year. Half of the time in Weiser you get surprised by a frost after April 15 so be sure to be ready to protect your celeriac in the event of a surprise late frost.

USDA Zone Info for Weiser

Here is the info for USDA Zone 6b.

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

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

Plants to Grow in Weiser

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