Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By using the USDA zone info for Buckeye you will be able to estimate when you can plant thunbergia.

Planting Calendar for Thunbergia

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

Since thunbergia require warm weather it's important to wait until after the last frost has passed before you can plant them.

The earliest that you can plant thunbergia in Buckeye 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. You probably don't want to wait any later than that or else your thunbergia may not have a chance to fully mature. Starting your thunbergia indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is February 15 in Buckeye. It might get as low as 20°F during the coldest months of winter.

Since the USDA zone info for Buckeye is not always accurate the actual date of last frost changes from year to year. Since half of the time in Buckeye it frosts late in the year after February 15 be ready to cover your thunbergia if you have a late frost.

USDA Zone Info for Buckeye

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 Buckeye

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