Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The earliest that you can plant polygonums in Watonga should be estimated by referring to 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.

Since polygonums are not cold tolerant you need to wait until after the last frost has passed before you can plant them.

The earliest that you can plant polygonums in Watonga 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. Any later than that and your polygonums may not have a chance to really do well. You can get started a couple of weeks earlier by starting your polygonums indoors.

Last Frost Date

The average date of last frost is April 15 in Watonga. You can expect an average low temperature of 0°F in the coldest months of winter.

It's important to remember that USDA zone info for Watonga is just an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Watonga it frosts late in the year after April 15 be ready to cover your polygonums if you have a surprise late frost.

USDA Zone Info for Watonga

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Watonga

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