My cannas went through a big move this last year. I thought they would never bloom, but they finally made it. If they are young or new to the ground it seems to take them longer. As long as they aren't planted too deep, or too crowded, they should do fine. Just think, when the others are done they might still be blooming for you.
Sky~~

None of mine are blooming yet. I had them in pots until about 3 or 4 weeks ago and then made a new bed for them. Some of them are growing fast and some are poking along. I sure hope the will bloom before winter.

Nancy

Only 2 of my ten or so that I planted are blooming yet. Some are still really small and show no signs of blooming anytime soon. I also hope that they manage to bloom this year! So it looks like you aren't alone!

good old faithful black knight is the only one blooming for me. The rest are taking the sweet time.