A tuber is a type of bulb.
http://urbanext.illinois.edu/b...
I have 2 of these. Although this was their 3rd summer, they still couldn't hold themselves up. I think I will trade them in the spring for something that doesn't need to be staked. The flowers are awesome, but I don't like looking at the stakes, or adjusting them after a wind storm, realizing the flowers are pointed at the ground anyway, yada yada.
