Just to verify what you have...are you talking about Canna X generalis (Canna ) which really isn't a Lily. Or Zantedeschia aethiopica (Calla Lily) I might have some Canna later this fall but I won't be doing that much in the garden until then because of the heat that will be on us until sometime in Sept or later. And I have no idea which cultivar I have, but some are Red, some yellow with red spots and some are orange with purple/red striped leaves.
