Before planting it is a good idea to find your USDA Zone info to estimate 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.

You will be able to determine when to plant kohlrabi by looking at the USDA zone info for Suisun City.

Planting Calendar for Kohlrabi

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

Since kohlrabi are moderately cold tolerant you can plant them just a bit earlier in the year than other frost tender plants.

The earliest that you can plant kohlrabi in Suisun City is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant kohlrabi and expect a good harvest is probably October. You probably don't want to wait any later than that or else your kohlrabi may not have a chance to grow to maturity. Starting your kohlrabi indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost is on February 15 in Suisun City. You should expect an average low temperature of 25°F in the coldest months of winter.

Since the USDA zone info for Suisun City is an average the actual date of last frost can change quite a bit from year to year. Half of the time in Suisun City last frost occurs after February 15 so make sure that you are prepared to protect your kohlrabi in the event of a late frost.

USDA Zone Info for Suisun City

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°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 30°F.

Plants to Grow in Suisun City

You may be interested in your other planting guides for Suisun City.