patreesh, I like that Rio too, but haven't tried it. I'm in zone 6 and boy do I hate to give room for a Hydrangea that doesn't bloom. I have only had luck with the Hydrangea that bloom on new and old wood, like 'Endless Summer'. I saw that Proven Winners is showing the Citiline group on their website. They list them as blooming on old wood and they say they are compact so easier to protect for the winter. I would think you would have to offer winter protection.

They also list another series called 'Let's Dance' ? It's supposed to bloom on old and new. Not sure it's available yet. Not as pretty as the Citiline.