Tubers are a foot or more long! That is just the bulb part, excluding the roots. They are also difficult to kill of if you have the right climate. Every bit of cane or tuber seems to be happy to keep the growing going. The lilac/pink ones look absolutely gorgeous when in flower against a blue sky. Unfortunately when I still had one and took photos, it was not a digital camera yet. Ina Auckland New Zealand On 2/12/2011 1:13 p.m., plicht@berkeley.edu wrote: > They are too large for pots.