Grew it outdoors in SoCal.

There it was an extremely vigorous vine even tough it received minimal attention.

The pendant flower clusters can be spectacular, up to 18 inches long.

The main "glitch" is that the flowers have so much nectar that they literally drip.

So, if you try it in the green house, train it so that it has room for the dangling flowers, also *not* over a pathway where you will receive a sticky "rain."

I've been growing Thunbergia laurifolia in my greenhouse for three years. The greenhouse was shaded much of the time before neighbor's cut down their box elder and we sold our camper. It was sluggish in winter but lived. Highly susceptible to spider mites and drying out. Wilts dramatically.