eric27

A biologist I knew a long time ago told me this in regards to cannas. He grew many of them from seed etc. He said to wait to cut the cannas down in fall until after a freeze hit them and then to wait a couple days more after the freeze before cutting them down. He said the reason was that the freeze caused the plant to force resouces, nutrients etc BACK down into the rhizomes. This helped the plant (rhizome) survive the winter in storage. He explained in more scientific how it works. Since then I always wait with my cannas and have had great luck. I assume this would be similar to bananas also-ie post fruiting and energy storage.