On the back 9 and loving it!
I don't know if they do. I'll have to try and find them since you did not provide a link. The "wink" emoji suggest that it just might not be so! At least not as much as the Chinese seem to have.Check out the urban farm guys on utube. They got it all figured out...
That's definitely Chinese and not Japanese. And it seems that you need to grow these in shade, much like Connecticut shade grown tobacco for cigar wraps.