We planted a nice arc of Big Time Happy in our botanical garden. It blooms just fine but true to form they blooms don't last very long and don't seem as big and lush as they appear 'outside.' They are on a very gentle south slope facing north (unfortunately). Apricot Sparkle is on the other end of the arc with some species between. I was really impressed this year to actually see the sparkle in the latter plants. They have been in the ground for two or three years so we will see how they do. They do bloom fairly continuously although on my rounds I didn't think to note from when to when. Too busy noting peony info and plants that needing accessioning I guess.