Fig. 1 Torenia fournieri
Fig. 2 Torenia blooms in summer to late fall.
There are no known serious insect and disease problems but they could be susceptible to powdery mildew and possibly root rot - depending on soil.
Torenia is giving me a positive first impression. So far, it will continue to have a place in my garden as an annual plant (replacing impatiens) until I find a better one.
Fig. 3 Torenia enjoys the shade of taller plant.
Try new plants in your garden - just for fun!