WPW is 3 years old in my garden. It has increased from 2 fans to 5 in those 3 years. I noticed one fan is quite a distance from the clump so I am thinking it is a bit of a traveller. It is disappointing in the bud count as I don't think I got even 10 blooms this year. It is also not the registered height here . More like 24 inches. Perhaps it needs a longer time to really settle in. The color of the blooms is good and they are consistent, rain and sun fast. The blooms are the registered size and form.