It's pretty standard to air layer, it's just really hard to root. I am by no means a great rooter, but I am 3 for 20 rooting and 2 of the 3 I did root ended up dying shortly after. I am typically 80-90 percent successful. That is what is odd...Bornholm(diamond), Susser Georg, fehmarn, laradek BT, etc all rooted without problem. This one is beyond stubborn. The three Sodus that initially rooted took well over six weeks to show any evidence of progress. That is why I just wait to air layer- then it's 100 percent success.