When can I plant Kohlrabi in Zone 6b

The USDA Zone info is a great tool for gardeners to help us estimate our gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for our area.

By looking at the USDA zone info for Zone 6b it's a good idea to determine when you can plant kohlrabi.


Planting Calendar for Kohlrabi

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

Kohlrabi do well in moderate cold which means that you can plant them just a bit earlier in the year than plants that are more sensitive to the cold.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant kohlrabi
Possibly ok, but a risky time to plant kohlrabi
Probably not a good time to plant kohlrabi

The earliest that you can plant kohlrabi in Zone 6b 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. If you are starting your kohlrabi indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Zone 6b. It might get as low as -5°F during the coldest months of winter.

Since the USDA zone info for Zone 6b is an average our actual date of last frost can change quite a bit from year to year. Since half of the time in Zone 6b we get a frost after April 15 be ready to cover your kohlrabi in the event of a late frost.

USDA Zone Info for Zone 6b

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 Low0°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 Zone 6b

You may be interested in our other planting guides for Zone 6b.