Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. 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 it's a good idea to plant polygonums in Nashville by checking out the USDA zone info.

Planting Calendar for Polygonums

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

Since polygonums require warm weather you need to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant polygonums in Nashville 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 really do well. If you are starting your polygonums indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost has passed is on March 15 in Nashville. In the coldest months of winter you should expect an average low temperature of 15°F.

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

USDA Zone Info for Nashville

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°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 20°F.

Plants to Grow in Nashville

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