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.

You can figure out when to plant thunbergia in Sugar Land by reviewing the USDA zone info.

Planting Calendar for Thunbergia

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

Since thunbergia do not do well in cold weather you have to wait until after the last frost before you can plant them.

The earliest that you can plant thunbergia in Sugar Land 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 thunbergia and expect a good harvest is probably September. Any later than that and your thunbergia may not have a chance to grow to maturity. Starting your thunbergia indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average all chance of frost has passed is on February 15 in Sugar Land. In the coldest months of winter you should expect an average low temperature of 20°F.

Keep in mind that USDA zone info for Sugar Land is an average and the actual date of last frost changes from year to year. Half of the time in Sugar Land there is a last frost after February 15 so just be sure to be ready to protect your thunbergia in the event of a surprise late frost.

USDA Zone Info for Sugar Land

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Sugar Land

You may be interested in your other planting guides for Sugar Land.