Wish I could help. Perhaps in a few years. I first tried buying seed from Schumacher who got them from China and it was a disaster. They sent the wrong seed (Henri I think) and it was moldy and I got zero germination. I could not find another source for seed. last fall I bought 4 trees from the wildlife group and potted them up in 3 gal RB2s. 3 survived and I got a few nuts with them growing on my deck this summer. I hope to start those nuts within a week.
Since these nuts seem so hard to come by, I plan to keep these trees in containers on my deck for several years to harvest nuts and grow them. If everything goes as planned, I should have enough nuts in a few years to start offering them up, but that will be a while.
I know there are some others on this forum that have some of these planted. Perhaps they can help with nuts.
As I recall, on another thread, someone talked to Alan. Evidently the Wildlife Group has not stopped selling them. They just had a bad year for nuts and are rebuilding stock.
Thanks,
Jack