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.

One way of estimating when to plant kohlrabi is to use the USDA zone info for West Lafayette.

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

The earliest that you can plant kohlrabi in West Lafayette 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 really do well. You can get started a little bit earlier by starting your kohlrabi indoors.

Last Frost Date

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

Always keep in mind that USDA zone info for West Lafayette is an average and the actual date of last frost is different every year. Since half of the time in West Lafayette you get a frost after April 15 be ready to cover your kohlrabi in the event of one of those late frosts.

USDA Zone Info for West Lafayette

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 West Lafayette

You may be interested in your other planting guides for West Lafayette.