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

In San Bernardino you can figure out when you can plant kale by checking out the USDA zone info.

Planting Calendar for Kale

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

You can plant kale 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 kale in San Bernardino 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 kale and expect a good harvest is probably October. You probably don't want to wait any later than that or else your kale may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your kale indoors.

Last Frost Date

The average date of last frost is February 15 in San Bernardino. In the coldest months of winter you should expect an average low temperature of 25°F.

Since the USDA zone info for San Bernardino may not be accurate from year to year the actual date of last frost is different every year. Half of the time in San Bernardino you get a frost after February 15 so be sure to be ready to protect your kale in the event of one of those late frosts.

USDA Zone Info for San Bernardino

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 San Bernardino

You may be interested in your other planting guides for San Bernardino.