One of the first steps you take when you are estimating your gardening schedule is find your 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.

The USDA zone info for Owatonna can be used to estimate when it's possible to plant kohlrabi.

Planting Calendar for Kohlrabi

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

You can plant kohlrabi a little earlier in the year because they are one of those plants that can tolerate a little bit of cold weather.

The earliest that you can plant kohlrabi in Owatonna 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 kohlrabi and expect a good harvest is probably August. Any later than that and your kohlrabi may not have a chance to fully mature. You can get started a few weeks earlier by starting your kohlrabi indoors.

Last Frost Date

On average all chance of frost has passed is on May 15 in Owatonna. You should expect an average low temperature of -25°F in the coldest months of winter.

Just be sure to remember that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Owatonna and it changes from year to year. Since half of the time in Owatonna it frosts late in the year after May 15 be ready to cover your kohlrabi if you have one of those late frosts.

USDA Zone Info for Owatonna

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 Owatonna

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