Question from a former neighbor. I don't have time even to look in the usual catalogs, though I'd bet they don't offer anything but the species if that. Which grows well enough here in northeast KS (usda z5, usually) to make a good (if scratchy) screen as well, part of the reason why he wants it. Anyway, my best guess is that there are only slightly fewer varieties of these than there are of wine grapes, but I actually don't have a clue. Any- one know one way or another, and if so where he can find some of the more refined varieties? BK--- assumes they refine his favored Old Milwaukee out of hophouse floor sweepings