One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Highland you can estimate when it's a good idea to plant kohlrabi by referring to the USDA zone info.

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 mild cold which means that you can plant them just a bit earlier in the year than more sensitive plants.

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

Last Frost Date

In Highland the average date of last frost happens on April 15. You can expect an average low temperature of -10°F in the coldest months of winter.

It's important to remember that USDA zone info for Highland is not always accurate and the actual date of last frost can change quite a bit from year to year. Half of the time in Highland you get a frost after April 15 so make sure that you are ready to protect your kohlrabi if you have a surprise late frost.

USDA Zone Info for Highland

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Highland

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