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

In Fredericksburg you can determine when to plant thunbergia by referring to the USDA zone info.

Planting Calendar for Thunbergia

Frost tolerance for thunbergia:	Not tolerant of frost.
When to plant:	After the last frost.

It's probably a bad idea to plant thunbergia until after the last frost because they are not cold tolerant.

The earliest that you can plant thunbergia in Fredericksburg 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 thunbergia and expect a good harvest is probably August. Any later than that and your thunbergia may not have a chance to grow to maturity. You can get started a little bit earlier by starting your thunbergia indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on March 15 in Fredericksburg. In the coldest months of winter you can expect an average low temperature of 10°F.

Always keep in mind that USDA zone info for Fredericksburg is not always accurate and the actual date of last frost is different every year. Half of the time in Fredericksburg you get a frost after March 15 so just be sure to be ready to cover your thunbergia if you have a surprise late frost.

USDA Zone Info for Fredericksburg

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 Fredericksburg

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