One of the best tools that you have as gardeners to help us estimate 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.

You will be able to estimate when it's possible to plant polygonums by looking at the USDA zone info for Waverly.

Planting Calendar for Polygonums

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

You should not plant polygonums until after the last frost when the weather gets warmer because they are not cold tolerant.

The earliest that you can plant polygonums in Waverly 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

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

Always keep in mind that USDA zone info for Waverly is not always accurate and the actual date of last frost changes from year to year. Since half of the time in Waverly you get surprised by a frost after April 15 be ready to protect your polygonums in the event of a surprise late frost.

USDA Zone Info for Waverly

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 Waverly

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