Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You can figure out when you can plant turnips in Portsmouth by referring to the USDA zone info.

Planting Calendar for Turnips

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

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

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

The last month that you can plant turnips and expect a good harvest is probably August. Any later than that and 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 April 15 in Portsmouth. In the coldest months of winter you can expect an average low temperature of -10°F.

Remember that USDA zone info for Portsmouth may not be accurate from year to year and the actual date of last frost changes from year to year. Since half of the time in Portsmouth it frosts late in the year after April 15 be ready to cover your turnips if you have a surprise late frost.

USDA Zone Info for Portsmouth

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Portsmouth

You may be interested in your other planting guides for Portsmouth.