One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The earliest that you can plant polygonums in Antioch can be determined by using the USDA zone info.

Planting Calendar for Polygonums

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

You really shouldn't plant polygonums until after the last frost because they require warm weather.

The earliest that you can plant polygonums in Antioch 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 little bit earlier by starting your polygonums indoors.

Last Frost Date

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

Since the USDA zone info for Antioch is not always accurate the actual date of last frost is different every year. Half of the time in Antioch there is a last frost after April 15 so always be ready to protect your polygonums in the event of a late frost.

USDA Zone Info for Antioch

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 Antioch

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