One of the first steps you take when you are figuring out your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The best time to plant thunbergia in Fairmont should be figured out by checking out the USDA zone info.

Planting Calendar for Thunbergia

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

Since thunbergia require warm weather you need to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant thunbergia in Fairmont 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. Starting your thunbergia indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Fairmont. In the coldest months of winter you should expect an average low temperature of -20°F.

Since the USDA zone info for Fairmont is not always accurate the actual date of last frost will vary from year to year. Half of the time in Fairmont last frost occurs after April 15 so be sure to be ready to cover your thunbergia in the event of a surprise late frost.

USDA Zone Info for Fairmont

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°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 -15°F.

Plants to Grow in Fairmont

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