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

The USDA zone info for Tustin should be reviewed 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.

Kohlrabi tend to make it in a little bit of 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 Tustin 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. You can get started a couple of weeks earlier by starting your kohlrabi indoors.

Last Frost Date

The average date of last frost is January 31 in Tustin. In the coldest months of winter you should expect an average low temperature of 30°F.

Since the USDA zone info for Tustin is just an average the actual date of last frost is different every year. Since half of the time in Tustin you get surprised by a frost after January 31 be ready to protect your kohlrabi in the event of a late frost.

USDA Zone Info for Tustin

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Tustin

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