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

In Silver City you can figure out when it's possible to plant polygonums by referring to 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 do not do well in cold weather you really should wait until after the last frost has passed before you can plant them.

The earliest that you can plant polygonums in Silver City 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. If you are starting your polygonums indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average all chance of frost has passed is on March 15 in Silver City. In the coldest months of winter you can expect an average low temperature of 10°F.

Since the USDA zone info for Silver City is not always accurate the actual date of last frost changes from year to year. Since half of the time in Silver City you get surprised by a frost after March 15 be ready to protect your polygonums in the event of a late frost.

USDA Zone Info for Silver City

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°F

This means that on a really cold year, the coldest it will get is 10°F. On most years you should be prepared to experience lows near 15°F.

Plants to Grow in Silver City

You may be interested in your other planting guides for Silver City.