One of the first steps you take when you are determining 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.

You should be able to figure out when it's possible to plant turnips by checking out the USDA zone info for La Mesa.

Planting Calendar for Turnips

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

Since turnips are not cold tolerant it's necessary to wait until after the last frost has passed before you can plant them.

The earliest that you can plant turnips in La Mesa is February. However, you really should wait until March 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. Any later than that and your turnips may not have a chance to grow to maturity. Starting your turnips indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

In La Mesa the average date of last frost happens on January 31. It might get as low as 30°F during the coldest months of winter.

Since the USDA zone info for La Mesa is not always accurate the actual date of last frost can change quite a bit from year to year. Since half of the time in La Mesa it frosts late in the year after January 31 be ready to cover your turnips in the event of a surprise late frost.

USDA Zone Info for La Mesa

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 La Mesa

You may be interested in your other planting guides for La Mesa.