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.

The earliest that you can plant turnips in American Canyon can be determined by looking at 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.

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

The earliest that you can plant turnips in American Canyon 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. If you wait any later than that and your turnips may not have a chance to really do well. If you are starting your turnips indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost is on February 15 in American Canyon. It might get as low as 25°F during the coldest months of winter.

Keep in mind that USDA zone info for American Canyon is just an average and the actual date of last frost will vary from year to year. Half of the time in American Canyon last frost occurs after February 15 so always be ready to cover your turnips in the event of one of those late frosts.

USDA Zone Info for American Canyon

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in American Canyon

You may be interested in your other planting guides for American Canyon.