Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By reviewing the USDA zone info for Prosser you should be able to determine when it's possible to 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 one of those plants that can tolerate a little bit of cold weather.

The earliest that you can plant kohlrabi in Prosser 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. Starting your kohlrabi indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Prosser. It might get as low as 0°F during the coldest months of winter.

Remember that USDA zone info for Prosser is an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Prosser you get a frost after April 15 so just be sure to be ready to protect your kohlrabi in the event of a surprise late frost.

USDA Zone Info for Prosser

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Prosser

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