The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By looking at the USDA zone info for Palmer you should be able to estimate when you can 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 just a bit earlier in the year because they are moderately cold tolerant.

The earliest that you can plant kohlrabi in Palmer 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. If you wait any later than that and your kohlrabi may not have a chance to really do well. Starting your kohlrabi indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

In Palmer the average date of last frost happens on May 15. It might get as low as -25°F during the coldest months of winter.

Always keep in mind that USDA zone info for Palmer may not be accurate from year to year and the actual date of last frost is different every year. Half of the time in Palmer you get a frost after May 15 so make sure that you are prepared to cover your kohlrabi in the event of one of those late frosts.

USDA Zone Info for Palmer

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 Palmer

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