The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A way of estimating when to plant poppies is to consult the USDA zone info for Portsmouth.

Planting Calendar for Poppies

Frost tolerance for poppies:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

You can plant poppies a bit earlier in the year because they do well in moderate cold.

The earliest that you can plant poppies in Portsmouth 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 poppies and expect a good harvest is probably September. Any later than that and your poppies may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your poppies indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Portsmouth. You should expect an average low temperature of -10°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Portsmouth is just an average and the actual date of last frost changes from year to year. Half of the time in Portsmouth you get a frost after April 15 so be sure to be ready to cover your poppies in the event of a 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.