One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You can figure out when you can plant pincushion flower in Haverhill by looking at the USDA zone info.

Planting Calendar for Pincushion Flower

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

Since pincushion flower are moderately cold tolerant you can plant them just a bit earlier in the year than more sensitive plants.

The earliest that you can plant pincushion flower in Haverhill 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 pincushion flower and expect a good harvest is probably September. You probably don't want to wait any later than that or else your pincushion flower may not have a chance to grow to maturity. Starting your pincushion flower indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Haverhill. In the coldest months of winter you can expect an average low temperature of -10°F.

Always keep in mind that USDA zone info for Haverhill is just an average and the actual date of last frost changes from year to year. Since half of the time in Haverhill it frosts late in the year after April 15 be ready to cover your pincushion flower if you have one of those late frosts.

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.