One of the best tools that you have as gardeners to help us estimate 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.

By looking at the USDA zone info for Costa Mesa it's a good idea to figure out when to plant turnips.

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 Costa 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. If you wait 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 few weeks earlier.

Last Frost Date

In Costa Mesa the average date of last frost happens on January 31. In the coldest months of winter you should expect an average low temperature of 35°F.

Keep in mind that USDA zone info for Costa Mesa is just an average and the actual date of last frost is different every year. Since half of the time in Costa Mesa last frost occurs after January 31 be ready to cover your turnips in the event of a late frost.

USDA Zone Info for Costa Mesa

Here is the info for USDA Zone 10b.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	35°F
Highest Expected Low	40°F

This means that on a really cold year, the coldest it will get is 35°F. On most years you should be prepared to experience lows near 40°F.

Plants to Grow in Costa Mesa

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