One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You can determine when to plant turnips in San Diego by referring to the USDA zone info.

Planting Calendar for Turnips

Frost tolerance for turnips:	Not tolerant of frost.
When to plant:	After the last frost has passed.

You can not plant turnips until after all chance of frost has passed because they are not cold tolerant.

The earliest that you can plant turnips in San Diego is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant turnips and expect a good harvest is probably September. You probably don't want to wait any later than that or else your turnips may not have a chance to really do well. You can get started a little bit earlier by starting your turnips indoors.

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.

Since the USDA zone info for San Diego may not be accurate from year to year 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 cover your turnips 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.