One of the best tools that you have as gardeners to help us determine your gardening schedule is the 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.

A common way of determining when it's the best time to plant kale is to look at the USDA zone info for San Gabriel.

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 tells us that you can plant them a little bit earlier in the year than other frost tender plants.

The earliest that you can plant kale in San Gabriel 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. Any later than that and 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 when the weather gets warmer is on January 31 in San Gabriel. In the coldest months of winter you can expect an average low temperature of 30°F.

Keep in mind that USDA zone info for San Gabriel may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Half of the time in San Gabriel you get surprised by a frost after January 31 so always be ready to cover your kale if you have a late frost.

USDA Zone Info for San Gabriel

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 San Gabriel

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