Learning from my mistakes. Two years ago after storing my cannas and elephant ear plants in the containers I grew them in, I decided to not repot them at the beginning of last summer. I noticed some of the cannas did not grew well or even flower. To my dismay I learned this year that the tubers had so overgrown in their pots that they were causing half of the tubers to be smothered by others. I spent the last week (this summer) repotting them and giving them room to grow this summer. I will not make this mistake again.