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.

In San Diego you can determine when you can plant carrots by checking out the USDA zone info.

Planting Calendar for Carrots

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

You can plant carrots just 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 carrots 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 carrots and expect a good harvest is probably October. You probably don't want to wait any later than that or else your carrots may not have a chance to really do well. If you are starting your carrots indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

The average date of last frost is February 15 in San Diego. In the coldest months of winter you should expect an average low temperature of 20°F.

It's important to remember that USDA zone info for San Diego is just an average and the actual date of last frost will vary from year to year. Half of the time in San Diego you get a frost after February 15 so make sure that you are ready to protect your carrots in the event of a late frost.

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.