I acquired one of these trees a few years ago and really like it . I am a sucker for odd shaped leaved JM's and this one is odd. This new cultivar is just crazy in leaf shape . It seems hardy and if you want a really cool truly different JM that everyone in your family will like or at least gawk at ;>) this is your tree.
Winter Hardiness: Zone 5 - Down to -20°
Summer Hardiness: Tree will be planted in partial shade