Steve Flanagan wrote:Even though it may be hard to get fruit, It could still be grown for its medicinal properties.
Has anyone developed a late flowering cultivar?
It is a great medicinal plant.
Japan would likely be the best source for cultivars adapted to PNW. It's mostly a very humid temperate climate, though the rainfall pattern is different. Monsoon in summer. Winters are drier, but rain is interspersed throughout the year. It is grown commercially at least as far north as Chiba/Tokyo, and surely there are backyard
trees in Tohoku (northeast region).
If it doesn't exist, breeding a PNW-adapted cultivar shouldn't be that difficult as they tend to be weedy landraces, but can also be propagated by grafting if one ends up with a lucky seedling.