Cannas for moist soil
As I understand it, some varieties of Canna can be grown as pond marginals. I have a very damp area of the garden (clay soil) and would love to grow Canna there. Any suggestions for which varieties can tolerate high levels as moisture? I was thinking 'Stuttgart' might do well. Also 'Bengal Tiger' but so far I've had no luck getting virus-free rhizomes of this one.
Thanks in advance.