I bought one of these for the first time. It is planted in a 12” pot. Cultivar is Ballerina white.

It has had 3 flowers so far. The second 2 set seed, though, and are developing into pods. Growth seems to have stopped, and though it looks healthy, I see no further flowers of leaves developing.

I really bought it for the flowers, though. Is this a plant that needs to be deadheaded to keep it blooming?

Thanks.