Two of the sweet William plants that I moved to my office last fall have started to bloom.
One has reddish-purple flowers, the other has white flowers.
They are the larger plants that were growing in the planter in the first photo in the post linked above. I don’t think these are the original plants that bloomed last spring, but “volunteer” plants that came from seed that those plants produced. More sweet William plants will bloom soon, including the only one that survived last winter outdoors in my large window planter.