One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The first chance to plant thunbergia in Radcliff can be figured out by using the USDA zone info.

Planting Calendar for Thunbergia

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

It's a bad idea to plant thunbergia until after the last frost has passed because they require warm weather.

The earliest that you can plant thunbergia in Radcliff 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. If you are starting your thunbergia 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 April 15 in Radcliff. In the coldest months of winter you can expect an average low temperature of -5°F.

Remember that USDA zone info for Radcliff may not be accurate from year to year and the actual date of last frost is different every year. Since half of the time in Radcliff you get a frost after April 15 be ready to cover your thunbergia in the event of one of those late frosts.

USDA Zone Info for Radcliff

Here is the info for USDA Zone 6b.

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

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

Plants to Grow in Radcliff

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