Canna variety ID
I got given a load of Canna rhizomes by a neighbour as I was developing my tropical garden. They've all grown really well and are now flowering, but I don't know what variety of Canna they are. I have a sheltered garden on the south coast but I need to know their hardiness. My neighbour leaves them out over winter but every garden's different and she's quite a way down the road with a different aspect.