What a beautiful rock garden Sandi.
We still aren't certain what will trigger the young ones to bloom. It could be to many moves within a year?
Weather?
I know the ones that I had problems with last year came from many different places, so it's not the source. I am really beginning to think it was the weird weather we had last year, along with moving/transplanting them. Although none of my own (not new last year) didn't have the problem. I know some I sent out bloomed at their new home.
So maybe it is a combination of a number of events that meet at just the right time?
This will be an interesting year, it has already shown to be an unusual winter and spring for us. Who know what will happen this growing season?