Yes, Hostas are very hardy here. They survive very well left outside under the snow.
Do you think maybe it's too hot in NZ for Hostas? They like shady areas, but maybe your heat is just too intense for them. And maybe they need a longer dormant period in the winter?? I don't know .. I'm just guessing:)
Anyway, thank you for your comments.
--lush-- (24) *