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.

You should be able to figure out when you can plant kohlrabi by reviewing the USDA zone info for Valparaiso.

Planting Calendar for Kohlrabi

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

Kohlrabi do well in some cold which means that you can plant them a little earlier in the year than other plants that might not handle the cold.

The earliest that you can plant kohlrabi in Valparaiso 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 kohlrabi and expect a good harvest is probably September. If you wait any later than that and your kohlrabi may not have a chance to fully mature. If you are starting your kohlrabi indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

In Valparaiso the average date of last frost happens on April 15. It might get as low as -15°F during the coldest months of winter.

Since the USDA zone info for Valparaiso is just an average the actual date of last frost is different every year. Half of the time in Valparaiso you get surprised by a frost after April 15 so make sure that you are prepared to protect your kohlrabi in the event of a late frost.

USDA Zone Info for Valparaiso

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Valparaiso

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