One of the first steps you take when you are estimating 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.

In Winchester you can determine when it's a good idea to plant polygonums by using the USDA zone info.

Planting Calendar for Polygonums

Frost tolerance for polygonums:	Not tolerant of frost.
When to plant:	After the last frost.

Since polygonums require warm weather it is important to wait until after the last frost before you can plant them.

The earliest that you can plant polygonums in Winchester 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 fully mature. Starting your polygonums indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Winchester. In the coldest months of winter you should expect an average low temperature of 0°F.

Since the USDA zone info for Winchester is an average the actual date of last frost changes from year to year. Since half of the time in Winchester it frosts late in the year after April 15 be ready to protect your polygonums if you have a surprise late frost.

USDA Zone Info for Winchester

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Winchester

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