One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You should be able to estimate when it's a good idea to plant kale by reviewing the USDA zone info for San Carlos.

Planting Calendar for Kale

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

Kale can survive in some cold which tells us that you can plant them a bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant kale in San Carlos 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 grow to maturity. You can get started a couple of weeks earlier by starting your kale indoors.

Last Frost Date

The average date of last frost is January 31 in San Carlos. You can expect an average low temperature of 30°F in the coldest months of winter.

Since the USDA zone info for San Carlos may not be accurate from year to year the actual date of last frost changes from year to year. Since half of the time in San Carlos it frosts late in the year after January 31 be ready to protect your kale if you have a surprise late frost.

USDA Zone Info for San Carlos

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 Carlos

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