One of the best tools that you have as gardeners to help us figure out 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.

You can estimate when it's possible to plant thunbergia in Gadsden by reviewing the USDA zone info.

Planting Calendar for Thunbergia

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

Since thunbergia are not cold tolerant you need to wait until after the last frost has passed before you can plant them.

The earliest that you can plant thunbergia in Gadsden 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. You probably don't want to wait any later than that or else your thunbergia may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your thunbergia indoors.

Last Frost Date

On average the last frost has passed is on March 15 in Gadsden. In the coldest months of winter you can expect an average low temperature of 10°F.

It's important to remember that USDA zone info for Gadsden is not always accurate and the actual date of last frost changes from year to year. Since half of the time in Gadsden you get surprised by a frost after March 15 be ready to cover your thunbergia if you have a late frost.

USDA Zone Info for Gadsden

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 Gadsden

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