I have had this plant for several years and it gets better each year. It grows in a six inch pot and has never been repotted. It seems to be quite happy because it has encompassed the entire pot.
The first picture is of this years flowers.
The second is last year and the third is two years ago.
I have another plant that is about the same size and it has never bloomed. Grows like a weed but has never produced a flower. It is the Susan Fuchs variety that has a FCC and is quite nice - (when it does flower).