One of the first steps you take when you are making a decision about your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The first chance to plant kohlrabi in Phoenix should be figured out by referring to the USDA zone info.

Planting Calendar for Kohlrabi

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

Kohlrabi are one of those plants that can tolerate a little bit of cold weather which tells us that you can plant them earlier than more sensitive plants.

The earliest that you can plant kohlrabi in Phoenix 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. Any later than that and your kohlrabi may not have a chance to really do well. You can get started a little bit earlier by starting your kohlrabi indoors.

Last Frost Date

On average the last frost has passed is on February 15 in Phoenix. It might get as low as 25°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Phoenix is just an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Phoenix it frosts late in the year after February 15 be ready to cover your kohlrabi in the event of one of those late frosts.

USDA Zone Info for Phoenix

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 Phoenix

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