Whoa!!! Thanks!! Hadn't even considered we could have naturalized Prunus in the US and, after reading your post, I see that my location is
**just** at the bottom of their range, I would be very very very happy to hear any updates Re whether you've had success in locating one (as I'd make it a goal to find one, although with Tampa Bay being the bottom-bound of their range I expect they'll be much fewer&further between here than in your area)
So you've got some cuttings, are they rooted? What do you mean by 'grafted red'? Lastly, am I understanding you correctly- do you mean to graft some of the cuttings/whips of traditional Ume to Chickasaw trunking/stock? If so I'm soooo eager to get in on this, heck if you can locate chickasaws (and the grafts take) but I can't locate, I'd be real happy to trade you a far bigger tree to get chickasaw stock, would love to grow a US-collected 'yamadori' 'ume'!!!