Both the plant and the blooms of Grace Seward are considerably larger than those of Simplex. Simplex is one of the older minis that had truly miniature plants and blooms. As time has gone by the plants and blooms of minis have slowly gotten larger, and GS represents the larger size of current minis. They both are nice, but different.

Thanks, Phil...
Very good to know! This will make a definite difference in where I place these plants if they ever arrive. I'm looking forward to both of them.