The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for San Diego should be read to figure out when to plant kale.

Planting Calendar for Kale

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

Kale do ok in moderate cold which means that you can plant them a little bit earlier in the year than more sensitive plants.

The earliest that you can plant kale in San Diego 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 few weeks earlier by starting your kale indoors.

Last Frost Date

On average the last frost is on February 15 in San Diego. You should expect an average low temperature of 20°F in the coldest months of winter.

Always keep in mind that USDA zone info for San Diego is not always accurate and the actual date of last frost will vary from year to year. Since half of the time in San Diego it frosts late in the year after February 15 be ready to protect your kale in the event of one of those late frosts.

USDA Zone Info for San Diego

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in San Diego

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