One of the first steps you take when you are making a decision about 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 using the USDA zone info for Pittsfield you should be able to determine when it's a good idea to plant polygonums.

Planting Calendar for Polygonums

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

Since polygonums do not do well in cold weather you have to wait until after the last frost before you can plant them.

The earliest that you can plant polygonums in Pittsfield 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 polygonums and expect a good harvest is probably August. You probably don't want to wait any later than that or else your polygonums may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your polygonums indoors.

Last Frost Date

The average date of last frost is April 15 in Pittsfield. It might get as low as -15°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Pittsfield is an average and the actual date of last frost is different every year. Since half of the time in Pittsfield last frost occurs after April 15 be ready to cover your polygonums if you have a late frost.

USDA Zone Info for Pittsfield

Here is the info for USDA Zone 5b.

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

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Pittsfield

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