The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Texas City you can figure out when you can plant polygonums by looking at the USDA zone info.

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 it is important to wait until after the last frost before you can plant them.

The earliest that you can plant polygonums in Texas City is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant polygonums and expect a good harvest is probably September. 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 the last frost is on February 15 in Texas City. In the coldest months of winter you should expect an average low temperature of 25°F.

Since the USDA zone info for Texas City is just an average the actual date of last frost will vary from year to year. Half of the time in Texas City it frosts late in the year after February 15 so make sure that you are ready to protect your polygonums if you have one of those late frosts.

USDA Zone Info for Texas City

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Texas City

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