One of the first steps you take when you are figuring out 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.

By looking at the USDA zone info for Haverhill you will be able to estimate when it's possible to plant gherkins.

Planting Calendar for Gherkins

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

Since gherkins are not cold tolerant it is necessary to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant gherkins in Haverhill 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 gherkins and expect a good harvest is probably August. If you wait any later than that and your gherkins may not have a chance to fully mature. If you are starting your gherkins indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

In Haverhill the average date of last frost happens on April 15. You should expect an average low temperature of -10°F in the coldest months of winter.

Since the USDA zone info for Haverhill may not be accurate from year to year the actual date of last frost is different every year. Half of the time in Haverhill it frosts late in the year after April 15 so just be sure to be ready to cover your gherkins if you have a surprise late frost.

USDA Zone Info for Haverhill

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 Haverhill

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