I have never seen Joyfulness on a rootstock and I wanted to try it, so I got an own roots which has been very disappointing. It arrived with most of the lower leaves removed due to fungal? I am not sure why and in spite of spraying with fungicide weekly proceeded to develop a hideous unknown leaf discoloration. And shows no signs of any new growth or new leaves that may come out. It may be a dead plant already. I can't tell if the plant is alive or not. I will post a photo.