Morus alba are hardy at least into z4. Poor soil OK. They get a twig
die-back &/or
stem canker sometimes, which can look like winter kill.
--- kieran or donna <> wrote:
> I thought that M. alba was borderline hardy here in Z6, so it seems unlikely
> that it would grow further north. Perhaps the native rubras do especially
> well around the edge of the prairies? That would make them invasive where
> Dave is, but not here where they have to compete with other trees and the
> soil is not so good. Just a thought.
> Helene, I would definitely get seeds, plenty of them to hedge your bets that
> you will get something as hardy as the original tree. Also, if you are
> there in summer to gather fruit for seeds, also take cuttings. Someone,
> maybe Lucky, once assured me that softwood cuttings of mulberry were very
> easy to root. Good luck! Donna
>
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