How do you tell if a cannas rhizome has a disease?
I came accross a trade where they indicated that they received disease rhizomes in 3 of their trades. They also indicated that it ruined their soil.
How do I tell if my cannas have a disease? If they do, what do I have to do the garden area in which they we planted? Do I have to remove all of the soil.
I live in Zone 5.
Sometimes my rhizomes are long and other times they are short and stumpy. Is this a sign of disease?