When to Plant Parsley in Portsmouth, NH

One of the best tools that you have as gardeners to help us figure out your gardening schedule is the 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.

A way of figuring out when it's a good idea to plant parsley is to refer to the USDA zone info for Portsmouth.


Planting Calendar for Parsley

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

You can plant parsley a bit earlier in the year because they are one of those plants that can tolerate a little bit of cold weather.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant parsley
Possibly ok, but a risky time to plant parsley
Probably not a good time to plant parsley

The earliest that you can plant parsley 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 parsley and expect a good harvest is probably September. If you wait any later than that and your parsley may not have a chance to fully mature. Starting your parsley indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average all chance of frost has passed is on April 15 in Portsmouth. In the coldest months of winter you can expect an average low temperature of -10°F.

Since the USDA zone info for Portsmouth is an average the actual date of last frost will vary from year to year. Since half of the time in Portsmouth you get surprised by a frost after April 15 be ready to protect your parsley in the event of one of those late frosts.

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.