"Jangchub" wrote in message
...


Actually, I said to dig them up leaving the soil on the rhizomes and
put them into a bushel basket.

In maybe 5 out of 30 years, my canna rhizomes began to decompose (also known
as composting!) in storage. Finally, I settled on a method recommended by a
local nursery: Rinse off all soil. Let rhizomes dry for a day or two. Give
them a light coating of sulfur powder the same way you'd dust chicken with
flour. Store in a non-living medium like vermiculite.