Cheers Dman .... was prompted by your recent chat with Matt on breeders syndicate!Welcome to The Canna Cabana Laz!
I have about 50 varieties .... my other big passion~!!I get jealous of those who can grow bamboo, outdoors. Welcome!
You might try Phyllo's ... but Zone 3 is hardcore!! lol ..... the UK is about Zone 6 .....Have you found any that will do well in zone 3?