I put a couple ponkan buds and algerian tangerines on my brother's kumquat trees over in Alabama. I also put a ponkan on his brown's select satsuma.

I was going to put several varieties on a lisbon lemon that he has planted as well, but the bark would not slip and I have not had any success with bark grafts on citrus, so I will wait until the lemon puts on some growth and try it later. The lemon is the only one of the 4 citrus trees that he planted that has not started growing.