The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

It's possible to determine when you can plant polygonums by looking at the USDA zone info for North Charleston.

Planting Calendar for Polygonums

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

Since polygonums require warm weather you really should wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant polygonums in North Charleston 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. If you wait any later than that and your polygonums may not have a chance to fully mature. Starting your polygonums indoors is a great way to get them started a few weeks earlier.

Last Frost Date

In North Charleston the average date of last frost happens on March 15. You can expect an average low temperature of 15°F in the coldest months of winter.

Since the USDA zone info for North Charleston may not be accurate from year to year the actual date of last frost is different every year. Half of the time in North Charleston you get surprised by a frost after March 15 so be sure to be ready to protect your polygonums if you have a late frost.

USDA Zone Info for North Charleston

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 North Charleston

You may be interested in your other planting guides for North Charleston.