By Kazeds
Kent,
United Kingdom 
do canna tropicana survive outside in winter
Asked from the GoYpedia
gravel garden ideas page
14 Sep, 2010
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In theory, no, may be killed by rotting in damp conditions or by cold. That said, though, mine survive outside here in West London, but I do keep them in pots out of the rain against a wall in a very sheltered spot all winter.
15 Sep, 2010