I found some seeds of Canna flaccida from BX #258, November 2010. They've been stored at room temp in a spare bedroom all this time. I scarified them & soaked them and today (4 days later) they're germinating. :-) Impressive, but not unexpected! These seeds remind me of Nelumbo seeds, which are reported to retain viability for decades if not centuries. I also found seeds of Hibiscus moscheutos from 2011 which I'm trying to soak & get them to germinate. The jury is still out on those for now. I'm happy Canna flaccida will bloom in my garden again this season. I actually have much fresher seeds, but wanted to see if these old seeds were still good. They are! Dennis in Cincinnati